Sports IllustratedTom Brady, Williams sisters among 23 celebrity investors in UFCSports IllustratedNearly two dozen celebrities, including New England Patriots quarterback Tom Brady, along with tennis stars Serena and Venus Williams and Maria Sharapova are new investors in the Ultimate Fighting Championship, WME-IMG announced. WME-IMG is the ...UFC owners enlist celebrity group of investorsESPN (blog)Ben Affleck, Tom Brady, Serena Williams among celebrity investors in UFCMMA FightingTom Brady, Robert Kraft officially become part of UFCWEEI.comFOXSports.com -MMAmania.com -Wall Street Journal -Bleacher Reportall 24 news articles »