Closing in on the biggest victory of his tennis career, the 21-year-old Swiss was having a terrific time at the US Open.

The No. 7 seed served for the match in the fourth set, before falling after four-plus hours Wednesday.

The top-ranked American man dropped to 4-3 on the year in major matches, while the Swede picked up his first Top 10 win in 11 attempts.

In a battle between two players with a lot of power, the best thing you can do is bet on there being a lot of games.

Seventh-seeded Dominic Stricker upset tournament favorite Lorenzo Musetti in five sets at the Next Gen ATP Finals to become the first player to qualify for the semifinals

Among them included Hans Hach Verdugo, who enjoyed a dream week on home soil alongside John Isner in Los Cabos.