GETTING IN THE RING???
Joe "Baby Joe" Castaneda -- Adrian Peterson's poker game rival -- is down to move the guys' beef from the felt tables to the squared circle ... telling TMZ Sports he definitely has interest in sparring the NFL legend in a sanctioned bout.
Castaneda, who went toe-to-toe last month with the former Minnesota Vikings running back during a violent scrap over cards at a Houston, Texas social club -- said this week if he were approached by some kind of celebrity boxing promotion to fight AP in a ring, he wouldn't say no.