Warning, spoilers ahead!
In the movie Rounders (1998) towards the end when Mike wins the game which he plays against Teddy KGB, Grama gets furious and smashes the table. I can't see an in universe explanation for his fury. He was going to be paid anyways and he was mostly patient and to some degree friendly to Mike unlike his attitude towards Worm. I find it very hard to explain his reaction as him rooting for Teddy KGB. What's your take on that?