He cheats at cards.

Tracy, feeling invincible and superior to Ace in every possible way, makes a little wager, betting the big guy double or nothing on a high stakes challenge. (Yeah Tracy, be confident. After all, it's easy to be confident that you'll win when you're gambling with someone else's money. Maybe you should have run this little plan of yours by King.) I hope he realizes that Ace didn't get to where he is today by playing by the rules, and even if he doesn't cheat, there's still the chance that, upon Tracy winning, he'll just bring out the gun that he's no doubt hidden within easy reach, shoot Tracy, and take the money anyway. Still, Tracy isn't completely hopeless, as he's made a call to the station for backup. I guess after they straightened out the mess at Gertie and B.O.'s everyone just went back to the station and didn't go to the casino where Tracy and that lone policeman, who may never have even been given a name, where still fighting crime. (The system works!) I'd say that his friends are about to jump into their squad cars and race over to Monte's, but I'm not so sure. That one cop looks like he's about to go brush his teeth (and probably then head for bed), demonstrating that the war on plaque is more important than the war on crime. I sure hope that Tracy has a Plan B (although, at this point, he might be on to Plan N).