Mel attended the opening of the Playhouse casino last night with Russian girlfriend Oksana Grigorieva

Mel Gibson pulls a stern look as he plays a game of blackjack in a Las Vegas casino.

His poker face reveals little about the hand he's been dealt, but after his first game the actor had to make a dash to collect more funds after running out of money.

Last night, the 53-year-old brought his pregnant girlfriend Oksana Grigorieva along with him to the grand opening party of the Playhouse casino.