Chiefs safety Bryan Cook was evaluated for a concussion and Texans linebacker Azeez Al-Shaair hurt his knee and was questionable to return after both left in the first half of their divisional playoff game Saturday.

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.

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.