League of Denial: The NFL, Concussions and the Battle for Truth by Mark Fainaru-Wada and Steve Fainaru:
During an exhibition Monday-night game at Kansas City, Hoge caught a pass out of the backfield and headed toward the goal line. Several defenders closed in, including nine-time Pro Bowl linebacker Derrick Thomas. As Hoge braced himself for the collision, Thomas plowed his helmet into Hoge’s ear hole.
Hoge lay on the turf, motionless. “I’ve never been in an earthquake, but the first thing I thought was, ‘Holy cow, man, the earth is shaking,’” he said. “It was shaking so bad I couldn’t get up. I had no equilibrium. I was like, ‘This damn earth won’t quit shaking.’” Tim Worley, a former Steelers running back who had come over with Hoge, was one of the first people to arrive on the scene. “Aw, damn,” Worley said, looking down at his obliterated friend.