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BSE Leaders

BSE Global Leaders

  • Joe Tsai
    Joe Tsai
    Governor, Brooklyn Nets Chairman, Barclays Center
  • Oliver Weisberg
    Oliver Weisberg
    Vice Chairman, BSE Global Alternate Governor, Brooklyn Nets
  • John Abbamondi
    John Abbamondi
    CEO, BSE Global Alternate Governor, Brooklyn Nets
  • Leo Ehrline
    Leo Ehrline
    Executive Vice President and Chief Experience Officer
  • Jeff Gewirtz
    Jeff Gewirtz
    Executive Vice President, Business Affairs and Chief Legal & Compliance Officer
  • Travis Sampson
    Travis Sampson
    Chief Information Officer
  • Mandy Gutmann
    Mandy Gutmann
    Senior Vice President, Communications
  • Savan Hacknorath
    Savan Hacknorath
    Senior Vice President, Human Resources
  • Dan Lefton
    Dan Lefton
    Senior Vice President of Ticketing, Strategy & Operations
  • Alton Byrd
    Alton Byrd
    Vice President, Long Island Nets Business Operations
Joe Tsai
Governor, Brooklyn Nets Chairman, Barclays Center

Joe Tsai is the governor of the Brooklyn Nets of the National Basketball Association (NBA), chairman of Barclays Center, and chairman of J Tsai Sports. His ownership in the Nets includes the Long Island Nets of the NBA G League and the Nets Gaming Crew of the NBA 2K League.

Tsai is also the owner of the New York Liberty of the Women’s National Basketball Association (WNBA) and the San Diego Seals, a professional indoor lacrosse team in the National Lacrosse League (NLL). Through J Tsai Sports, Tsai has investments in the upstart field lacrosse league, Premier Lacrosse League, Los Angeles FC of Major League Soccer, and several sports media and technology companies based in North America and Asia.

Full Bio

Joe Tsai

Governor, Brooklyn Nets Chairman, Barclays Center

Joe Tsai is the governor of the Brooklyn Nets of the National Basketball Association (NBA), chairman of Barclays Center, and chairman of J Tsai Sports. His ownership in the Nets includes the Long Island Nets of the NBA G League and the Nets Gaming Crew of the NBA 2K League.

Tsai is also the owner of the New York Liberty of the Women’s National Basketball Association (WNBA) and the San Diego Seals, a professional indoor lacrosse team in the National Lacrosse League (NLL). Through J Tsai Sports, Tsai has investments in the upstart field lacrosse league, Premier Lacrosse League, Los Angeles FC of Major League Soccer, and several sports media and technology companies based in North America and Asia.

Tsai is one of the co-founders of Alibaba Group, a global Internet technology company based in China. He is a member of board of directors of the company and serves as its executive vice chairman. Tsai’s career at Alibaba Group spans over 20 years, during which he served as the company’s chief financial officer and oversaw strategic mergers, acquisitions and investments.

Tsai played high school football and lacrosse at The Lawrenceville School in New Jersey. In his freshman year at Yale, he walked on to the varsity lacrosse team and continued to play for four years. Tsai has been a consistent supporter of the Yale lacrosse program. Yale won the NCAA Division I Men’s Lacrosse National Championship in 2018 and again played in the Championship Final game in 2019.

In 2017, Tsai received the George H.W. Bush ‘48 Lifetime of Leadership Award from Yale University. The award honors alumni athletes who, in their lives after Yale, have made significant leadership contributions in their worlds of governance, commerce, science and technology, education, public service, and the arts and media.

Prior to founding Alibaba Group, Tsai was a private equity investor with Investor AB of Sweden’s Wallenberg family. He is a graduate of Yale College (BA ’86) and Yale Law School (JD ’90), and practiced tax law as an associate with Sullivan & Cromwell LLP in New York from 1990 to 1993.

Oliver Weisberg
Vice Chairman, BSE Global Alternate Governor, Brooklyn Nets

Oliver Weisberg is an alternate governor of the Brooklyn Nets of the National Basketball Association (NBA), the chief executive officer of J Tsai Sports, and the chief executive officer of Joe Tsai’s family office, a multi-strategy investment firm based in Hong Kong.

Weisberg graduated from Harvard College and spent considerable time living and doing business in Mainland China. He is a fluent Chinese speaker.

Weisberg started on Wall Street in New York and built his career in private equity, special situations, and hedge fund investing in Asia. He was part of Goldman Sachs’ (GS) Asian Special Situations and Principal Investment Area (PIA) divisions, where he represented the firm’s investment in Alibaba and sat on the Alibaba board on behalf of GS. In 2006, Weisberg joined Citadel and was a partner in Hong Kong when he left to join Tsai’s family office in 2016.

Full Bio

Oliver Weisberg

Vice Chairman, BSE Global Alternate Governor, Brooklyn Nets

Oliver Weisberg is an alternate governor of the Brooklyn Nets of the National Basketball Association (NBA), the chief executive officer of J Tsai Sports, and the chief executive officer of Joe Tsai’s family office, a multi-strategy investment firm based in Hong Kong.

Weisberg graduated from Harvard College and spent considerable time living and doing business in Mainland China. He is a fluent Chinese speaker.

Weisberg started on Wall Street in New York and built his career in private equity, special situations, and hedge fund investing in Asia. He was part of Goldman Sachs’ (GS) Asian Special Situations and Principal Investment Area (PIA) divisions, where he represented the firm’s investment in Alibaba and sat on the Alibaba board on behalf of GS. In 2006, Weisberg joined Citadel and was a partner in Hong Kong when he left to join Tsai’s family office in 2016.

In addition to managing Tsai’s family office, Weisberg manages the firm’s investments in the Brooklyn Nets, New York Liberty, San Diego Seals, Premier Lacrosse League, and Los Angeles FC. Weisberg played competitive tennis in high school and was a member of the Harvard squash team.

Weisberg serves as the vice chairman of Teach for China and is a member of the Advisory Board of the Harvard University Shanghai Center and the Harvard China Fund. He also serves on the Lincoln Center China Advisory Council and is a member of the Young Presidents’ Organization and the Confrerie des Chevaliers du Tastevin.

John Abbamondi
CEO, BSE Global Alternate Governor, Brooklyn Nets

As Chief Executive Officer, Abbamondi is responsible for leading the overall business strategy and operations for BSE Global, the parent company of the National Basketball Association’s Brooklyn Nets, Barclays Center, the Long Island Nets of the NBA G-League and Nets Gaming Crew of the NBA 2K League. He is charged with advancing the company’s existing sports, media and entertainment businesses as well as identifying and executing on new opportunities for growth. He also serves as Alternate Governor for the Brooklyn Nets.

Full Bio

John Abbamondi

CEO, BSE Global Alternate Governor, Brooklyn Nets

As Chief Executive Officer, Abbamondi is responsible for leading the overall business strategy and operations for BSE Global, the parent company of the National Basketball Association’s Brooklyn Nets, Barclays Center, the Long Island Nets of the NBA G-League and Nets Gaming Crew of the NBA 2K League. He is charged with advancing the company’s existing sports, media and entertainment businesses as well as identifying and executing on new opportunities for growth. He also serves as Alternate Governor for the Brooklyn Nets.

Abbamondi is a widely respected sports and entertainment industry veteran with deep experience across the National Basketball Association, the National Hockey League and Major League Baseball. Prior to joining BSE Global, he was Executive Vice President for Ticketing, Suites and Corporate Hospitality at The Madison Square Garden Company. He had previously served as Senior Vice President of Team Marketing and Business Operations at the NBA, where he was responsible for assisting NBA teams to grow their profitability through strategic consulting on all aspects of team business operations. Prior to joining the NBA, he spent eight years in MLB, including three seasons as the assistant general manager of the St. Louis Cardinals.

Before beginning his career in sports, Abbamondi served nine years as a U.S. Navy flight officer and is a two-time recipient of the Navy Air Medal with 40 combat missions over Iraq. He earned a Bachelor of Science in political science from Massachusetts Institute of Technology and a Master of Business Administration from the Stanford University Graduate School of Business.

Abbamondi and his fiancée Sarah currently reside in Manhattan, with plans to move to and root themselves in the Brooklyn community this fall.

Leo Ehrline
Executive Vice President and Chief Experience Officer

As EVP/Chief Experience Officer for BSE Global, Leo Ehrline is responsible for further improving the customer experience at BSE venues and events, working closely with all areas of the company, including security, guest services, food and beverage, events and hospitality, analytics, marketing, communications, ticketing, and traffic. In addition, he oversees the seamless communication between basketball and business, and manages many business relationships at Barclays Center, including the NY Islanders.

In his 22-year tenure with the organization, Ehrline has been a key contributor across many aspects of the business. He most recently served as EVP, Chief Administrative & Relationship Officer, being the key liaison between the front office and the Brooklyn Nets ownership group. He played a major role in the organization's move from New Jersey to Brooklyn.

Full Bio

Leo Ehrline

Executive Vice President and Chief Experience Officer

As EVP/Chief Experience Officer for BSE Global, Leo Ehrline is responsible for further improving the customer experience at BSE venues and events, working closely with all areas of the company, including security, guest services, food and beverage, events and hospitality, analytics, marketing, communications, ticketing, and traffic. In addition, he oversees the seamless communication between basketball and business, and manages many business relationships at Barclays Center, including the NY Islanders.

In his 22-year tenure with the organization, Ehrline has been a key contributor across many aspects of the business. He most recently served as EVP, Chief Administrative & Relationship Officer, being the key liaison between the front office and the Brooklyn Nets ownership group. He played a major role in the organization’s move from New Jersey to Brooklyn.

Prior to joining the Nets, Ehrline spent 19 years at the Meadowlands Sports Complex. He had a steady ascent up the corporate ladder, working his way from the accounting office to the box office, and eventually managing all marketing and sales efforts at the Meadowlands.

A native of Medford, N.J., Ehrline graduated from the University of Notre Dame in 1977. He resides in Jersey City, NJ, and he and his wife Kathy, spend most of their free time at the Jersey shore . His two sons. Leo IV and John, reside in Hoboken.

Jeff Gewirtz
Executive Vice President, Business Affairs and Chief Legal & Compliance Officer

Jeff Gewirtz is the Executive Vice President of Business Affairs and Chief Legal & Compliance Officer for BSE Global (BSE). Gewirtz joined BSE in May 2007 as Senior Vice President and General Counsel, and he was promoted to his current EVP and CLO position in 2010. He also previously served as BSE’s Chief Administrative Officer.

Gewirtz is responsible for advising BSE’s ownership and his executive management colleagues on key business, strategic, and legal matters, including for the Brooklyn Nets, Barclays Center, the NBA G League’s Long Island Nets, the NBA 2K League’s NetsGC, and the WNBA’s New York Liberty. Gewirtz has oversight for all corporate, commercial, transactional, media, litigation, and day-to-day business and legal affairs for the BSE companies. Gewirtz also works closely with management of Barclays Center on a wide-range of critical arena operations and event programming initiatives. He additionally has oversight for BSE’s external affairs function

Full Bio

Jeff Gewirtz

Executive Vice President, Business Affairs and Chief Legal & Compliance Officer

Jeff Gewirtz is the Executive Vice President of Business Affairs and Chief Legal & Compliance Officer for BSE Global (BSE). Gewirtz joined BSE in May 2007 as Senior Vice President and General Counsel, and he was promoted to his current EVP and CLO position in 2010. He also previously served as BSE’s Chief Administrative Officer.

Gewirtz is responsible for advising BSE’s ownership and his executive management colleagues on key business, strategic, and legal matters, including for the Brooklyn Nets, Barclays Center, the NBA G League’s Long Island Nets, the NBA 2K League’s NetsGC, and the WNBA’s New York Liberty. Gewirtz has oversight for all corporate, commercial, transactional, media, litigation, and day-to-day business and legal affairs for the BSE companies. Gewirtz also works closely with management of Barclays Center on a wide-range of critical arena operations and event programming initiatives. He additionally has oversight for BSE’s external affairs function.

Gewirtz was a key member of the negotiating team for BSE’s most significant commercial initiatives over the past several years, such as: the 2012 relocation of the New Jersey Nets to Brooklyn; development of the $1 billion Barclays Center; the 2015 relocation of the New York Islanders to Barclays Center and oversight of all legal affairs for the Islanders’ business operations through 2019; team and arena ownership transfer transactions in 2010, 2016, 2018, and September 2019; re-development of NYCB LIVE, home of the Nassau Veterans Memorial Coliseum; development of the Brooklyn Nets’ state-of-the-art practice facility, the HSS Training Center; acquisition of the Webster Hall business; and BSE’s media rights alliance with YES Network.

Gewirtz was named to the 2019 United States GC Powerlist by The Legal 500 and in 2015 his legal department was named one of the top 50 in-house legal departments in the United States by The Legal 500. In addition, Gewirtz was named 2014 Sports Counsel of the Year by the Association of Media & Entertainment Counsel, and in 2009 Gewirtz was selected to the prestigious “Forty Under 40” by Sports Business Journal as one of the 40 top sports executives under the age of 40 in the United States. Gewirtz sits on the Board of Directors of the Sports Lawyers Association and he is a past Sports Committee Chair of the American Bar Association’s Forum on the Entertainment and Sports Industries. In 2017 he was appointed to the Board of Directors of the Brooklyn Volunteers Lawyers Project and in 2018 he was appointed to the Board of Trustees of the Women’s Sports Foundation.

Prior to BSE, Gewirtz served as the United States Olympic Committee (USOC) General Counsel and Chief Legal & Government Affairs Officer where he was responsible for all USOC legal matters, as well as the USOC’s government relations activities with Congress and federal government agencies. Gewirtz has also held positions with: The Coca-Cola Company’s Corporate Legal Division – as Global Marketing Counsel – where he negotiated many of Coca-Cola’s most significant sports industry transactions such as its $500 million+ NCAA Corporate Champion sponsorship and media alliance with CBS Sports; IOC Television & Marketing Services SA – as Director of Legal Affairs – where he served as lead counsel for the International Olympic Committee’s global sponsorship Olympic Partner (“TOP”) Programme in connection with the 2002 Salt Lake Olympic Winter Games and 2004 Athens Olympic Games; the LPGA Tour as General Counsel; and the WTA. He began his legal career as a corporate associate at the New York City law firm of Dunnington, Bartholow & Miller LLP.

A native of Baldwin Harbour, New York, Gewirtz is a graduate of Tufts University, where he was a four-year member and Captain of the Tufts Varsity Tennis Team his senior year, as well as a member of its New England Championship team. In 2016 he was appointed to the Tufts Athletics Board of Advisors. Gewirtz received his law degree from Brooklyn Law School, where he was the recipient of a three-year merit scholarship and from which he is a two-time recipient of its Alumni Achievement Award in Sports Law.

Gewirtz lives in Manhattan with his wife, Brooke Raphael, who is Vice President for Commercial with Phosplatin Therapeutics, and their two children, Eton and Dalia.

Travis Sampson
Chief Information Officer

As Chief Information Officer, Travis Sampson leads technology across all BSE Global properties and teams, including BSE Global’s corporate offices and the HSS Training Facility in Industry City, Barclays Center, the Brooklyn Nets and their NBA G League affiliate, the Long Island Nets, and the Nets’ NBA 2K League team, NetsGC. Respected as a credible voice in aligning business tactics with sound technical strategy and creatively embracing the upside of innovation while minimizing risk, Sampson’s focus is pushing BSE Global as an industry leader in team and venue technology.

Full Bio

Travis Sampson

Chief Information Officer

As Chief Information Officer, Travis Sampson leads technology across all BSE Global properties and teams, including BSE Global’s corporate offices and the HSS Training Facility in Industry City, Barclays Center, the Brooklyn Nets and their NBA G League affiliate, the Long Island Nets, and the Nets’ NBA 2K League team, NetsGC. Respected as a credible voice in aligning business tactics with sound technical strategy and creatively embracing the upside of innovation while minimizing risk, Sampson’s focus is pushing BSE Global as an industry leader in team and venue technology.

Sampson joined BSE Global in July after serving as Vice President of Technology for AEG Facilities at Barclays Center, where he led the venue design and technology integration team in 2012. Sampson’s career spans 15+ years in the sports and entertainment, and media technology industries. Prior to joining AEG, he held technology management roles at the National Basketball Association and Viacom Media International.

Mandy Gutmann
Senior Vice President, Communications

As Senior Vice President of Communications, Mandy Gutmann leads the business and internal communications, and community relations efforts for BSE Global properties, including Barclays Center, the Brooklyn Nets and their NBA G League team, the Long Island Nets, and their NBA 2K League affiliate, NetsGC. She also manages media relations for concerts, college basketball, boxing, and other special events, encompassing all aspects of corporate, entertainment, community, and crisis communications.

Since joining the company in 2012, Gutmann has played an integral role in the launch of the Brooklyn Nets brand after the team’s move from New Jersey, the grand opening of Barclays Center in 2012, the re-opening of NYCB LIVE, home of the Nassau Veterans Memorial Coliseum on Long Island, and most recently, the re-opening of the iconic music venue, Webster Hall. Gutmann was hired as Communications Manager in 2012, and has risen through the ranks to her current role, to which she was named in July 2019.

Full Bio

Mandy Gutmann

Senior Vice President, Communications

As Senior Vice President of Communications, Mandy Gutmann leads the business and internal communications, and community relations efforts for BSE Global properties, including Barclays Center, the Brooklyn Nets and their NBA G League team, the Long Island Nets, and their NBA 2K League affiliate, NetsGC. She also manages media relations for concerts, college basketball, boxing, and other special events, encompassing all aspects of corporate, entertainment, community, and crisis communications.

Since joining the company in 2012, Gutmann has played an integral role in the launch of the Brooklyn Nets brand after the team’s move from New Jersey, the grand opening of Barclays Center in 2012, the re-opening of NYCB LIVE, home of the Nassau Veterans Memorial Coliseum on Long Island, and most recently, the re-opening of the iconic music venue, Webster Hall. Gutmann was hired as Communications Manager in 2012, and has risen through the ranks to her current role, to which she was named in July 2019.

After breaking into the sports industry with Women’s Sports Foundation, Gutmann held various public relations positions at Madison Square Garden for more than four years.

Raised in Dayton, Ohio, Gutmann became the owner and operator of “Mandy’s Cool Candies,” a Good Humor Ice Cream truck, at the age of 16. Over the next five years, she became a dominant force in the local ice cream truck scene, acquiring her first taste of business experience.

Gutmann is a graduate of Ithaca College with a B.A. in journalism and sports studies. She resides in Brooklyn with family.

Savan Hacknorath
Senior Vice President, Human Resources

As Senior Vice President of Human Resources, Savan Hacknorath serves as a strategic business partner to BSE's executive leadership team and is responsible for developing human resource strategies in alignment with BSE's core business objectives, and leading people operations, talent management and employee experience across BSE’s venues and teams.

Hacknorath brings more than 15 years of professional experience to BSE in business and human resources. Prior to joining the organization in 2017, Hacknorath served as the Director of Global Human Resources at Marc Jacobs International, where she served as a strategic business partner to division heads globally. Prior to that, she worked for VINCE and Burberry in human resources, business partner and leadership roles. Hacknorath began her career in business operations with Target.

Full Bio

Savan Hacknorath

Senior Vice President, Human Resources

As Senior Vice President of Human Resources, Savan Hacknorath serves as a strategic business partner to BSE’s executive leadership team and is responsible for developing human resource strategies in alignment with BSE’s core business objectives, and leading people operations, talent management and employee experience across BSE’s venues and teams.

Hacknorath brings more than 15 years of professional experience to BSE in business and human resources. Prior to joining the organization in 2017, Hacknorath served as the Director of Global Human Resources at Marc Jacobs International, where she served as a strategic business partner to division heads globally. Prior to that, she worked for VINCE and Burberry in human resources, business partner and leadership roles. Hacknorath began her career in business operations with Target.

Hacknorath received her Bachelor of Science in supply chain management and logistics from Iowa State University. She resides in Manhattan.

Dan Lefton
Senior Vice President of Ticketing, Strategy & Operations

As Senior Vice President of Ticketing, Strategy & Operations for BSE Global, Dan Lefton provides oversight for ticket sales, suite sales, premium services, tickets services, ticket analytics and the box office for Barclays Center, the Brooklyn Nets, and their NBA G League team, the Long Island Nets.

Lefton previously worked at BSE from 2007-2013 as Vice President, Suite Sales and Premium Seating, and played a key role in the Nets’ move to Barclays Center. In his 4.5-year absence from BSE, Lefton co-founded Dynasty Sports & Entertainment, which provides a pricing, distribution and inventory management platform in the sports and entertainment space.

Full Bio

Dan Lefton

Senior Vice President of Ticketing, Strategy & Operations

As Senior Vice President of Ticketing, Strategy & Operations for BSE Global, Dan Lefton provides oversight for ticket sales, suite sales, premium services, tickets services, ticket analytics and the box office for Barclays Center, the Brooklyn Nets, and their NBA G League team, the Long Island Nets.

Lefton previously worked at BSE from 2007-2013 as Vice President, Suite Sales and Premium Seating, and played a key role in the Nets’ move to Barclays Center. In his 4.5-year absence from BSE, Lefton co-founded Dynasty Sports & Entertainment, which provides a pricing, distribution and inventory management platform in the sports and entertainment space.

Alton Byrd
Vice President, Long Island Nets Business Operations

As Vice President of Business Operations for the Long Island Nets, Alton Byrd oversees strategic and operational activities for the NBA G League team of the Brooklyn Nets. Byrd led the launch of the team’s inaugural season at Barclays Center in Brooklyn and the team’s permanent move to NYCB LIVE, home of the Nassau Veterans Memorial Coliseum, on Long Island.

Prior to joining the Long Island Nets in 2016, Byrd accumulated more than 25 years of sports and brand marketing experience as a professional basketball player, coach, entrepreneur and business executive. He most recently served as Chief Revenue Officer for the Atlanta Dream of the WNBA where he grew the team’s sponsorship, merchandise and ticket sales.

Full Bio

Alton Byrd

Vice President, Long Island Nets Business Operations

As Vice President of Business Operations for the Long Island Nets, Alton Byrd oversees strategic and operational activities for the NBA G League team of the Brooklyn Nets. Byrd led the launch of the team’s inaugural season at Barclays Center in Brooklyn and the team’s permanent move to NYCB LIVE, home of the Nassau Veterans Memorial Coliseum, on Long Island.

Prior to joining the Long Island Nets in 2016, Byrd accumulated more than 25 years of sports and brand marketing experience as a professional basketball player, coach, entrepreneur and business executive. He most recently served as Chief Revenue Officer for the Atlanta Dream of the WNBA where he grew the team’s sponsorship, merchandise and ticket sales.

Byrd has previously held a variety of roles that have shaped his business experience, including Maloof Sports & Entertainment and the London Monarch of NFL Europe.

Byrd played professional basketball for Crystal Palace Basketball Club in London, and at 25 became the first African-American General Manager of a British sports organization, the Murray International Metals Sports Organization in Edinburgh, Scotland. While securing sponsorships such as Nike and Renault for the organization, Byrd led Murray International to four British championships, five Scottish championships, and the team’s first ever appearance in the second round of the European Champions Basketball Cup.

Byrd is a newly inducted board member of Long Island Association (LIA). Nassau PAL honored him for his community contributions in 2018; and he was an honoree for the NCC Foundation’s 17th Annual Golf Outing in support of Nassau Community College. Byrd was also inducted into the 2018 Class Legends of Ivy League Basketball.

With the Long Island Nets, Byrd has been lucky enough to lead the charge in receiving the following awards and recognitions, amongst many others:

  • Three citations from the Town of North Hempstead recognizing the Long Island Nets, two recognizing Alton Byrd
  • Three citations from the Nassau County Legislature recognizing the Long Island Nets, three recognizing Alton Byrd
  • Certificate of Appreciation from Nassau County Executive Laura Curran
  • Appreciation certificates from Nassau BOCES, Project Warmth and United Way, Nassau County Police Athletic League, Hempstead High School, and many more.