Bills and Sabres owner Terry Pegula was ranked the 18th-richest owner in American professional sports, according to Forbes.
The money magazine projected Pegula's net worth at $4.3 billion. He ranked seventh among individual NFL owners and fifth among NHL owners.
The rankings included only majority owners and excluded ownership groups spread across families, such as the New York Yankees' Steinbrenner family.
Steve Ballmer, the Las Angeles Clippers owner and former Microsoft CEO, ranked first on the list with a net worth of $33.6 billion. Paul Allen, also a former Microsoft exec, was second at $20.6 billion, making him the richest individual owner in the NFL (Seattle Seahawks); he also owns the NBA's Portland Trail Blazers.
Philip Anschutz, owner of the L.A. Kings and L.A. Galaxy, was ranked third at $12.6 billion, making him the richest owner in the NHL and MLS. The MLB's richest individual owner was said to be the San Francisco Giants' Charles Johnson ($6 billion).
Pegula bought the Bills in 2014 for $1.4 billion after spending roughly $150 million on the Sabres in 2011.
NFL owners who ranked ahead of Pegula:
• Paul Allen, Seahawks ($20.6 billion)
• Stanley Kroenke, Rams ($8.1 billion)
• Stephen Ross, Dolphins ($7.5 billion)
• Shahid Khan, Jaguars ($7.1 billion)
• Robert Kraft, Patriots ($6.2 billion)
• Jerry Jones, Cowboys ($5.6 billion)
NHL owners who ranked ahead of Pegula:
• Ann Walton Kroenke, Avalanche ($5.5 billion)
• Marian Ilitch, Red Wings ($5.2 billion)
• Charles Dolan, Rangers ($5 billion)
• Jeremy Jacobs Sr., Bruins ($4.4 billion)