Tenure as owner: 9 years (2010-present)
Purchase price of team: $365 million
Current value of team: $2.4 billion
Net worth: $9.8 billion
Source of wealth: Investments
Team record: 288-434, .399 winning percentage
Bottom line: In 2010, Mikhail Prokhorov made a bold statement, "I have said that if the Nets don't win the NBA championship within five years, I will punish myself by getting married." We are now in Year 9, and the Nets still don’t have a championship, and Prokhorov still doesn’t have a wife.
As a self-made billionaire, Prokhorov had reason to be confident, but he found out this basketball thing is tougher than it looks. The Nets have had six coaches and just one postseason series victory since Prokhorov took over.
What’s keeping Prokhorov from ranking even worse was the successful rebranding of the New Jersey Nets into the Brooklyn Nets, although much of that credit goes to former minority owner Jay-Z.
Prokhorov won't get an opportunity to make good on his promise since he plans to sell his 51 percent share of the team to Joseph Tsai, the co-founder of Chinese internet company Alibaba, giving the Taiwanese-Canadian billionaire sole ownership of the Nets.