Affleck beat 90 other players, including "Spider-Man" actor Tobey Maguire, last weekend at the Commerce (Calif.) Casino's California State Poker Championship, World Entertainment News Network reported Tuesday.
"This is not likely the last time you'll see Ben Affleck at one of our final tables," said Nancy Friedman, Commerce Casino spokeswoman. "He has become a respected member of the poker elite and continues to work to improve his game."
Affleck now advances to next April's World Poker Tour Championship.
Maquire was eliminated early during the three-day tournament, WENN said.