Jonny Wilkinson on concussion: It rattled my head so much, my brain must have moved

As ever, Jonny Wilkinson was hurling himself into the tackle with abandon. “It was against Bayonne, away,” he recalls. “I went to smash their back row and caught his elbow right on the chin. I reeled away and hit the floor, came to a little and thought, ‘What’s going on?’ ”