Rafael Nadal won his 19th Grand Slam title after holding off Russian Daniil Medvedev's exhilarating fightback in one of the greatest US Open finals.
Spain's Nadal, 33, won 7-5 6-3 5-7 4-6 6-4 against the fifth seed in New York.
Nadal, seeded second, was cruising at two sets and a break up, only for Medvedev to force a decider.
But Nadal stopped his momentum to eventually clinch a thrilling victory in four hours and 51 minutes.
Nadal's victory moves him within one of Swiss rival Roger Federer's all-time leading tally of Grand Slam victories.
"It has been one of the most emotional nights in my tennis career," Nadal said.