CHARLOTTE, N.C. (AP) - Panthers coach Ron Rivera says he's involved in ongoing discussions with the NFL and the Players Association about ways to make sure league MVP Cam Newton is given the same protection in the pocket as other smaller quarterbacks.

Newton blasted NFL officiating following Sunday's game against the Arizona Cardinals after taking a shot to his lower right leg from defensive tackle Calais Campbell as he was releasing the ball. Campbell was not flagged for the hit and the Panthers settled for a short field goal rather than an automatic first down.

Newton complained Sunday that officials aren't doing enough to protect him and he "doesn't feel safe" on the field, which is taking the fun out of the game for him.

Rivera stood behind his quarterback on Monday, saying Newton's comments are "correct" and he supports him 100 percent.