Indianapolis Colts defensive back Rock Ya-Sin is out for Saturday’s Wild Card matchup against the Buffalo Bills.

Ya-Sin has a concussion, and he wasn’t able to clear league protocols ahead of the game.

Not good news for the Colts, who are up against emerging quarterback Josh Allen and a wide receiver core featured by league leading Stefon Diggs.

The Colts are good stopping the run, but they finished the year ranked 23rd in defensive passing yards allowed averaging 248.9 yards per game.

With the absence of Ya-Sin, expect the Bills to exploit that secondary all game long in the opening Wild Card game.