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Kevin Allen

9. Kevin Allen, Philadelphia Eagles, 1985
He played just one season before testing positive for cocaine. He later served three years in prison, and remains the butt of one of Buddy Ryan’s greatest jabs: Ryan called Allen a great player "if you want someone to stand around and kill the grass."

NFL draft: Biggest first-round busts

You'd think a first-round draft pick would guarantee you a good chance of landing a successful player. Not so. Picks at every single position in the first round have failed to pan out, whether from lack of talent, injuries, front-office follies or bad attitudes. Here are the worst picks at every draft position of the first round. – Jay Busbee