Tiafoe escapes Michelsen to reach US Open semi-finals
- Frances Tiafoe rallied from two sets down and 3-0 down in the fifth set.
- He defeated Alex Michelsen with a final score of 5-7, 3-6, 7-5, 6-3, 7-6 (10/6).
- Tiafoe is the American 11th seed in the tournament.
- Michelsen was competing in his first Grand Slam quarter-final.
- The match featured dramatic momentum shifts.