[1][2] In 1992, he joined Tribune Media as senior counsel in the law department, handling acquisitions and transactions.

[4] In 1998, Davis joined America Online as senior vice president of corporate development and was subsequently appointed president/COO of the AOL Interactive Properties Group, where he led the internet brands and businesses of AOL.

[5][6] In 2005, Davis and AOL co-founder Steve Case launched venture capital firm Revolution LLC, based in Washington, DC, which—as of March 2022—has invested more than $1.5 billion, including notable early investments in Scopely,[7] Zipcar,[8] DraftKings,[9] Sportradar, CLEAR and BigCommerce.

[1][2] In 2017, Davis created and launched a new mixed martial arts company called the Professional Fighters League, which presents MMA in a sports-season format and is broadcast in 160 countries.

Davis has since raised $175 million of total capital for the league, including a $65 million financing round in February 2021 with investors Legends Hospitality, Elysian Park Ventures, Knighthead and Ares Management.