Reilly Opelka's Upset Victory in the Netherlands: Medvedev Falls to 24 Aces

Reilly Opelka has advanced to the Libema Open semifinals in the Netherlands by defeating top-seeded Daniil Medvedev with 24 aces. Opelka will face Zizou Bergs in the semifinals, while the other semifinal pits No. 2 seed Ugo Humbert against Canada's Gabriel Diallo. In the BOSS Open in Stuttgart, Germany, top seed Alexander Zverev, No. 2 Taylor Fritz, No. 3 Ben Shelton, and No. 4 Felix Auger-Aliassime all advanced to the semifinals with straight-sets wins.

Reilly Opelka has secured a historic victory, defeating top-seeded Daniil Medvedev in a thrilling two-set match at the Libema Open in the Netherlands. Opelka's serve was the key to his victory, as he hit a staggering 24 aces during the one-hour, 36-minute encounter. The 27-year-old American's impressive performance has propelled him to the semifinals, where he will face Belgian qualifier Zizou Bergs [1].

Medvedev, who was aiming to return to the Top 10 rankings after his recent performance at Stuttgart, was unable to maintain his composure under Opelka's relentless serving pressure. The Russian's five double faults, including three in the second-set tiebreak, ultimately proved to be his downfall. Opelka, who has been on a roll this season, will now look to build on this momentum as he advances to the semifinals [2].

In the other half of the draw, Canadian Gabriel Diallo has also made a significant impact on the grass-court surface. The 23-year-old upset third seed Karen Khachanov to reach his second ATP Tour semi-final, demonstrating his growing prowess on the surface. Diallo will face French second seed Ugo Humbert in the other semifinal [3].

The BOSS Open in Stuttgart, Germany, has seen top seeds Alexander Zverev, Taylor Fritz, Ben Shelton, and Felix Auger-Aliassime all advance to the semifinals with straight-sets victories. This has set up an intriguing weekend of matches as the top players vie for the title [4].

References:
[1] https://www.atptour.com/en/news/medvedev-opelka-s-hertogenbosch-2025-friday
[2] https://sportstar.thehindu.com/tennis/reilly-opelka-beats-daniil-medvedev-to-reach-libema-open-semifinal-tennis-news/article69692591.ece
[3] https://www.tennisnow.com/News/2025/June/Opelka-Tops-Top-Seeded-Medvedev-in-S-Hertogenbosc.aspx
[4] https://www.flashscore.com/news/tennis-hertogenbosch-atp-singles-lucky-loser-opelka-topples-medvedev-to-reach-semi-finals-in-den-bosch/MZIED9BT/