On August 11, 1991, McDuffie was running a Winston Cup race at Watkins Glen International Raceway, when on the fifth lap, he lost control of his car and collided with fellow driver Jimmy Means and the two crashed into a tire barrier, with McDuffie flipping on top of Means' car. Means made it out unscathed, but McDuffie did not survive the accident.
On August 11, 1991, McDuffie was running a Winston Cup race at Watkins Glen International Raceway, when on the fifth lap, he lost control of his car and collided with fellow driver Jimmy Means and the two crashed into a tire barrier, with McDuffie flipping on top of Means' car. Means made it out unscathed, but McDuffie did not survive the accident.