Date: 5/5/1956
Game: FA Cup Final, Manchester City vs. Birmingham City
Watch it here

During the 1956 FA Cup Final against Birmingham, Trautmann was defending Manchester City's goal with a 3-1 lead. In the 75th minute, a collision with an opposing attacker knocked him out, but he quickly regained consciousness. Because no substitutes were permitted, a dazed Trautmann carried on, making two saves in the dying minutes to wrap up the Cup. After dealing with neck pain in the ensuing days, x-rays revealed that Trautmann had dislocated five vertebrae in his neck. Had any more damage been done, Trautmann would've died. Sadly, Trautmann never fully recovered physically or psychologically, and he retired a few seasons thereafter.