NEW YORK (AP) - Juan Martin Del Potro has ended Roger Federer's run of dominance at the U.S. Open, stunning the top-ranked Swiss great in five sets to win in his first Grand Slam final.

The 20-year-old Argentine prevailed 3-6, 7-6 (5), 4-6, 7-6 (4), 6-2 on Monday night to snap Federer's streak of five straight U.S. Open titles.

The sixth-seeded Del Potro had been 0-6 in his career against Federer.

Federer had won 40 consecutive matches at flushing meadows. He was seeking to become the first man since Bill Tilden in 1920-25 to win the American Championship six straight times and the first man since Rod Laver in 1969 to win three straight majors in a season.

Del Potro upset no. 3 Rafael Nadal in the semifinals in straight sets.

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