Justin Thomas carded a one-under 69 in Sunday's final round to win the WGC-Bridgestone Invitational at Firestone. Thomas finished at 15-under-par for the tournament to earn his third victory of the season. Kyle Stanley was alone in second at 11-under, while Dustin Johnson and Thorbjorn Olesen tied for third place at minus-10. Phil Mickelson ended in a tie for 24th at three-under. Tiger Woods posted his second straight 73 on Sunday to share 31st place with several others at even-par.