He was n't the only one on the front - page of the leaderboard to falter down the stretch as Blayne Barber made bogey on 16 .
Justin Thomas made double - bogey on 17 .
He was n't the only one on the front - page of the leaderboard to falter down the stretch as Blayne Barber made bogey on 16 and Justin Thomas made double - bogey on 17 .