NEW YORK — Felix Auger-Aliassime is into the semifinals of the U.S. Open, exactly four years after the first and only time the 25-year-old Canadian had reached the final four at a Grand Slam tournament.

Seeded 25th, Auger-Aliassime upset No. 8 seed Alex de Minaur of Australia 4-6, 7-6 (7), 7-5, 7-6 (4) in Wednesday’s quarterfinal to advance.

He will play the winner of the match late Wednesday between Italians Jannik Sinner and Lorenzo Musetti.

“Four years is a long time, even if in the span of a lifetime it’s also not that long. But 2021 does feel like a long time ago. I feel like I’m a different person,” Auger-Aliassime said. “With the opportunity I had to start on the pro tour so young, it allows me now, with a second wind, another opportunity to find myself in the semis of a Slam. An

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