Rounders (1998)

A young, reformed gambler must return to playing high stakes poker to help a friend pay off loan sharks, while balancing his relationship with his girlfriend and his commitments to law school. Gifted poker player Mike McDermott loses his entire $30,000 bankroll in a hand of Texas hold'em against Teddy KGB, a Russian mobster who runs an illegal underground poker room. Shaken, Mike decides to concentrate on law school. However, when his childhood friend Lester 'Worm' Murphy is released from prison and owes an outstanding debt, Mike joins him in a furious race to earn money, putting his relationships and commitments at risk. In a race against time to pay off Worm's debt, Mike gets his shot at redemption by playing KGB in a no limit, heads-up game of Texas Hold'em.