Tiafoe d. Michelsen

Tiafoe beat Michelsen 5-7, 3-6, 7-5, 6-3, 7-6(6) in the quarterfinals at the U.S. Open - New York. Tiafoe won 170 of 343 points (50%). Tiafoe hit 10 aces to 21 and won 67% of points behind the first serve (62/93) against 73% for Michelsen. Tiafoe converted 8 of 17 break points and saved 15 of 23 faced; Michelsen converted 8 of 23. Michelsen double-faulted 9 times. Winners to unforced errors: 50–43 for Tiafoe, 55–61 for Michelsen. The match was played on hard in United States.