Matthew Perry -- The Odd Gamble ... Dropping Thousands At L.A. Casino

Matthew Perry was involved in an early morning high-stakes chase ... he was spotted at the Commerce Casino putting up major bucks while sipping 'Bucks. Witnesses say " The Odd Couple " star showed up before 7 AM Thursday morning and blew through at least $10k on 3-card poker before pulling out another ten ... all while slurping down java. Who knows, maybe he's doing hands-on research for Oscar Madison ... but may we suggest the $5 blackjack?