Veteran safety Bryan Cook was injured during the Kansas City Chiefs’ divisional-round playoff showdown against the Houston Texans this afternoon. Cook was the Chiefs’ leading tackler before he left the field to be evaluated for a concussion in the first half.

Update: Cook returned to the game with about four minutes left to go in the second quarter. The Kansas City Chiefs' defensive secondary has taken a hit during the AFC divisional round against the Houston Texans.

The Kansas City Chiefs have already watched a couple of defensive backs come up injured early in their game against the Houston Texans in the Divisional Round.