It’s clear that Minnesota Vikings head coach Mike Zimmer was upset over the cheap shot Tennessee Titans cornerback Lamarcus Joyner put on quarterback Teddy Bridgewater during Sunday’s game.

Bridgewater received an elbow to his head after sliding at the end of a play, and was briefly knocked unconscious. He left the game to be evaluated for a concussion and was replaced by Shaun Hill.

Zimmer was still upset over the cheap shot after the game, judging by the way he approached Titans head coach Jeff Fisher in the handshake line. Zimmer did shake Fisher’s hand, but the Vikings coach did not look his counterpart in the eyes or acknowledge his presence.