Kyle "Bugha" Giersdorf's $3 MILLION victory at the Fortnite World Cup is adding even more fire to one of the nastiest feuds in Esports ... involving a billionaire and one of the hottest execs in gaming.
TMZ Sports has obtained a lawsuit filed by Rob Moore -- the CEO of Sentinals, one of the top Esports franchises in the world. Bugha is a key member of the team.
Moore is suing Stan Kroenke's Esports company, KSE -- claiming he was tapped to build and run Stan's Esports empire in 2017 .