Potro d. Coric

Potro beat Coric 6-4, 6-3, 6-1 in the fourth round at the U.S. Open - New York. Potro won 86 of 147 points (59%). Potro hit 9 aces to 6 and won 80% of points behind the first serve (44/55) against 57% for Coric. Potro converted 6 of 15 break points and saved 0 of 1 faced; Coric converted 1 of 1. Winners to unforced errors: 33–24 for Potro, 23–30 for Coric. The match was played on hard in United States.