By ATP Staff. Jannik Sinner survived a series of unpredictable momentum shifts Wednesday at the US Open, where the top seed defeated 2021 champion Daniil Medvedev 6-2, 1-6, 6-1, 6-4 to reach his third major semi-final of the season. This year’s Australian Open champion, who holds a tour-leading 21 match wins at majors this season, has now …
