Justin Engel in action during his tennis match against Felix Auger-Aliassime in the Stuttgart Open, Germany, Friday June 13, 2025. AP
The 17-year-old German gave former U.S. Open semifinalist Auger-Aliassime a tough fight in the first set before the Canadian took a 7-6 (3), 6-3 win.
Auger-Aliassime next plays second-seeded Taylor Fritz in the semifinals. The Canadian's victory keeps up a record of reaching the semifinals all three times he's played in Stuttgart. He was runner-up in 2019 and 2021.
Engel's upset win over U.S. player Alex Michelsen on Thursday made him the youngest player to reach the quarters of any tour-level men's grass-court event since Boris Becker won Wimbledon as a 17-year-old in 1985.
Engel this week also became the second-youngest player since 1990, behind Rafael Nadal, to have won a match on all three surfaces — grass, clay and hard-court — on the tour.
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