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Daniil Medvedev is continuing his hard-court roll right into the U.S. Open semifinals after beating Stan Wawrinka 7-6 (6), 6-3, 3-6, 6-1.

The No. 5 seed reached the final four at a major tournament for the first time and improved his tour-leading total to 49 victories this year. He reached the final in three straight tournaments on hard courts leading into the U.S. Open, winning the last one.

Medvedev, 23, had his legs treated twice in the first set but played through the pain to become the youngest semifinalist at the U.S. Open since Novak Djokovic was also 23 in 2010.

He will play five-time champion Roger Federer or unseeded Grigor Dimitrov in the semifinals.

Wawrinka eliminated the defending champion Djokovic in the fourth round but fell short of getting back to the semifinals for the first time since winning the 2016 U.S. Open title.