Cam Newton, Josh Norman scuffle in practice after QB shoves CB

— -- SPARTANBURG, S.C. -- Cam Newton and Josh Norman got into a scuffle at Carolina Panthers practice Monday after Newton shoved Norman in the face while tackling the cornerback, who had intercepted Newton's pass attempt.

After practice, coach Ron Rivera said Norman stiff-armed Newton to his helmet at the end of the play, prompting Newton's shove.

Newton had to be pulled off by teammates and called Norman a "pissant."

In the dustup, Newton also said, "Hit me like that again and you'll know something."

Newton and Norman continued to yell at each other later in practice. Newton shouted: "I bet you won't do that again."

Newton declined interviews following practice.

Rivera responded in the affirmative when he was asked if he has been with a team where a quarterback got into a fight, pointing to his time as a player with the Bears.

"Remember, I played with Jim McMahon," he said.

Tension has been building between Newton and Norman, who have exchanged verbal barbs the past few days. 

Linebacker  Thomas Davis told Newton, "That's stupid," following the skirmish.

Rivera said the scuffle shouldn't be seen as a knock at Newton's leadership abilities.