Patrick Cantlay held off top-ranked Jon Rahm to win the US PGA Tour Championship Sunday and claim the $15 million FedEx Cup playoffs top prize.

Cantlay two-putted for birdie at the par-five 18th to cap a one-under par 69 that gave him a 21-under par total and a one-shot victory over Spain's Rahm, who made the second birdie of his two-under 68 at the final hole to finish on 20-under.