Los Angeles Angels star Anthony Rendon was just punished for his heated altercation with a fan last week ... getting slapped with a 5-game ban and a fine.
Major League Baseball senior V.P. for on-field operations Michael Hill shared the decision minutes ago ... saying unless Rendon appeals, the suspension will begin immediately, which means he would be eligible to return to the Angels on Sunday against the Blue Jays.
As we previously reported, Rendon grabbed an Athletics fan and attempted to hit him after the Halos' 2-1 loss in Oakland .