(AP) -- Poker champion Phil Laak has a good chance of winning when he sits down this week to play 2,000 hands of Texas Hold'em - against a computer. It may be the last chance he gets. Computers have gotten a lot better at poker in recent years; they're good enough now to challenge top professionals like Laak, who won the World Poker Tour invitational in 2004. But it's only a matter of time before the machines take a commanding lead in the war for poker supremacy.