Tiafoe Fights Back From Two Sets Down to Reach the US Open Semifinals

Two Sets Down, Then Everything Changed

Frances Tiafoe is into the US Open semifinals after beating fellow American Alex Michelsen 5-7 3-6 7-5 6-3 7-6 in a quarterfinal that took five sets and ended in a deciding tiebreak.

For two sets, Michelsen was the better player. He took the first 7-5, breaking at the death after Tiafoe had led early, then ran away with the second 6-3. Tiafoe, the 12th-ranked player in the world facing a man ranked 46th, was one set from going home.

Then came the game that decided the tournament for both of them. Serving at 5-4 in the third set, two sets to love up, Michelsen stepped up to serve for the match and a place in the semifinals. Tiafoe broke him. From 5-5 Tiafoe took the set 7-5, carried it into a 6-3 fourth, and closed out the deciding tiebreak 10-6.

Michelsen had a first Grand Slam semifinal on his racquet and could not close the door. Tiafoe now faces the winner of Carlos Alcaraz and Ben Shelton for a place in the final.

The Margins That Actually Decided It

Michelsen served the bigger ball all night: 21 aces to Tiafoe's 10, and 73% of his first-serve points won against 67%.

What separated them was everything else. Michelsen made 61 unforced errors to Tiafoe's 43, and hit nine double faults against four. On the second serve the advantage flipped: Tiafoe won 52% of those points to Michelsen's 47%, and 53% of his second-serve return points to Michelsen's 48%.

Break points tell the rest. Tiafoe faced 23 and saved 15. Michelsen faced 17 and saved 9. Both men converted eight, but Tiafoe needed only 17 chances to Michelsen's 23. Tiafoe also went forward with far more purpose, winning 71% of his net points (29 of 41) against Michelsen's 54% (30 of 56).

What It Means

Michelsen served bigger and still lost, because a five-set match rewards the player who keeps the error count down and holds his nerve in the games that decide sets. Tiafoe survived one of those games at 4-5 in the third and never looked back.

Anyone still holding a live bracket in TennisDraw will want to look again at this half of the draw.