Frances Tiafoe was almost out of the US Open – flat, frustrated and trailing by two sets and a break – when the night, and his tournament, suddenly caught fire.
Four hours and 38 minutes after he first walked into Arthur Ashe Stadium, the 28-year-old American walked off it a 5-7 3-6 7-5 6-3 7-6 (10-6) winner over compatriot Alex Michelsen, into a third semi-final in five years at Flushing Meadows and with the crowd ringing in his ears.
Michelsen’s statement, Tiafoe’s sleepwalk
For two sets and most of a third, this was Michelsen’s match, Michelsen’s stage, Michelsen’s breakthrough.
The 22-year-old, playing his first Grand Slam quarter-final, arrived in New York without dropping a set. He played like a man who had no intention of starting now. His backhand bit through the court, his serve held up under early pressure, and he met the occasion with a calm that belied the stakes.
They traded early breaks in the opening set, but Michelsen dictated the rallies and the scoreboard. At 6-5, he pounced again, ripping 15 winners in the set to Tiafoe’s four and sealing the opener with the authority of a player who believed he belonged.
Tiafoe later admitted it: “Everyone was asleep in the first couple of hours, I was too.” It showed. The 11th seed looked a step slow, his shot selection muddled, his trademark swagger muted.
Michelsen did not wait around. He tightened his grip in the second set, the backhand doing heavy damage on the biggest points. Tiafoe searched for rhythm; Michelsen simply held his. The world number 46 took the set 6-3 and then broke early in the third. At two sets to love and a break up, he stood on the brink of the biggest win of his career.
The game that changed everything
Serving at 5-4 in the third, Michelsen could see the finish line. The tension finally arrived.
Two double faults crept into a service game that had been rock solid all night. The arm that had been loose and free suddenly tightened. Tiafoe, sensing the first crack in the armour, rushed in. He broke back, levelled at 5-5, and for the first time in the match, the noise inside Ashe truly rose.
That single game flipped the script. Tiafoe “snuck out that third set and got better and better,” as he put it, snatching it 7-5 and then riding the wave. The fourth set opened with three straight games to the 11th seed, the crowd now fully awake, the energy finally matching the occasion.
Michelsen tried to steady himself, but the match had shifted. Tiafoe’s forehand began to land with more depth, his feet danced on the baseline, and he started playing the kind of aggressive, front-foot tennis that has made him a New York favourite. He closed out the fourth 6-3, and a contest that had looked like a straight-sets procession suddenly headed into a deciding set with all the momentum on the other side of the net.
Chaos, courage and a tie-break
The fifth set turned wild.
Both men broke and were broken, momentum swinging with almost every changeover. Michelsen refused to fold, even as his earlier dominance had evaporated. Tiafoe, chasing a fourth five-set win at a major this year, leaned on the roars from the stands and the experience of so many nights on this court.
Each break of serve drew another surge from the Arthur Ashe crowd. Each response from Michelsen drew a murmur of respect. The young American, in tears when it was over, had announced himself long before the final ball.
It all came down to the 10-point tie-break. Tiafoe, who had been on this stage before, played it like a man who knew what was at stake. He struck first, then tightened his grip, and when the last Michelsen forehand drifted out, the scoreboard read 10-6 and the comeback was complete.
“He’s a hell of a player and he easily could have won today. Shout out to Alex Michelsen,” Tiafoe said afterwards, as the two Americans shared an embrace that matched the weight of the contest.
New York’s man, one step away again
Tiafoe’s victory sends him back into the semi-finals in New York for the third time since 2020, a testament to the bond he has built with this tournament and this city. The fan favourite has now collected four five-set wins at majors in 2026 alone, and this one might be the most draining of the lot.
He will next face either defending champion Carlos Alcaraz or eighth seed Ben Shelton, a brutal assignment either way, with the one stage he has never reached here – the final – finally within reach.
Tiafoe has fallen one step short before, losing to Alcaraz in 2022 and Taylor Fritz in 2024.
Now, after surviving the edge of elimination and riding the Arthur Ashe roar yet again, he stands one match away from rewriting his Flushing Meadows story.
