You can't mess with Alek Manoah's fastball on the field, and you apparently can't mess with it off of it either ... 'cause the Blue Jays ace absolutely eviscerated an MLB Network analyst this week after the guy body shamed him on live TV.
Anthony Recker, a former MLB catcher who's been breaking down players and games for the league's network for the past year, made the comments on "MLB Tonight" on Wednesday ... seemingly taking a shot at Manoah's 6-foot-6, 285-pound frame.
"Show me you're willing to put a little more time in the gym," Recker said.