Forbes' "Richest 400 Americans" includes 14 owners in the NBA, headlined by Paul Allen of the Portland Trail Blazers, who also owns the Seattle Seahawks.

The richest NBA owner is Orlando Magic owner Rich DeVos, who comes in at No. 60 on the list with a net worth of $6.8 billion.

There are 12 other NBA owners on the list, including Kroenke (Nuggets), Micky Arison (Heat, $5.9 billion), Dan Gilbert (Cavaliers, $3.9 billion), Charles Dolan (Knicks, $3.3 billion), Tom Gores (Pistons, $2.7 billion), Mark Cuban (Mavericks $2.5 billion), Josh Harris (Sixers, $2.5 billion), Robert Pera (Grizzlies, $1.95 billion), Herb Simon (Pacers, $1.95 billion), Donald Sterling (Clippers, $1.9 billion), Glen Taylor (Timberwolves, $1.7 billion) and Tom Benson (Pelicans).

The richest person involved in the sports world is Nike chairman Phil Knight.