Forbes' Top 400 Richest Americans has (as of December 2016) Mike Ilitch #88 with a net worth of $6.1 Billion.
In 1982 he bought the Detroit Red Wings for $8 million. The team was in financial turmoil on and off the ice, but he pumped in the money, built through the draft, groomed and nurtured the players, and got a few out of communist countries.
This paid off with bringing the Stanley Cup back to Hockeytown in 1997, 1998, 2002, and 2008.
Those of us that keep an eye on sports know what good ownership can do, and he was one of the best.