COLUMBIA, Mo. (AP) Drew Lock arrived at Missouri two years ago with a powerful right arm, fluffy bangs and an easy confidence. He seemed ready to be a Southeastern Conference quarterback.

A few months later, after he was hustled into the starting lineup by necessity and became a tackling dummy for SEC opponents, his father was concerned.

"I specifically remember watching him walk out the locker room after the Florida game and worrying about him as he walked toward me," said Andy Lock, a former offensive lineman at Missouri. "He was limping, head down, shoulders dropped. I thought, `Boy, that's not my son right there.'"