US Open Quarter-Finals Deliver Stunning Upsets as Multiple Tournaments Reach Critical Stages
US Open Quarter-Finals Showcase Competitive Depth
The US Open quarter-finals on August 26 delivered an array of compelling matchups that highlighted the competitive nature of the tournament. Hugo Dellien upset Mohamed Echargui 4-6, 4-6, while Tancredi Schoolkate defeated Jasmine Secord 3-6, 2-6. These victories set the stage for the semi-final rounds to come.
Hong, Kalieva, and Costoulas Advance in Dominant Fashion
Several players impressed with convincing performances in their quarter-final clashes. Se-Chuk Hong overcame Nikoloz Basilashvili 6-3, 7-6, while Stefania Costoulas dispatched Josipa Ruggeri 7-5, 6-4. Most dominant was Ekaterina Kalieva, who dismantled Kristina Mladenovic 6-2, 1-6, 6-1 to secure her spot in the semi-finals. Magdalena Vladmannova also advanced, defeating Maria Lara Carle 6-3, 6-3.
Monterrey and Philadelphia Tournament Updates
In Monterrey's round of 16, Chwalinska and Kraus edged Kempen and Panova 1-6, 6-3, 10-8 in a thrilling doubles encounter. Yuliana Starodubtseva also progressed in the same round, beating Jil Tjen 4-6, 3-6. At the Philadelphia event, Jakob Grabher advanced with a straight-sets victory over Allie Krueger, winning 6-4, 6-4.
Winston-Salem Round of 16 Produces Notable Results
Winston-Salem's round of 16 featured two significant upsets on August 26. Marton Rottgering pulled off a notable victory against Tomas Machac, prevailing 6-2, 7-6, while Marko Damm delivered a shock result by defeating Daniil Medvedev 5-7, 3-6 in a compelling match that saw Medvedev fall short in the tournament.
All results of 2026-08-26
| Tournament | Match | Score |
|---|---|---|
| Monterrey | Chwalinska/ Kraus def. Kempen/ Panova | 1-6 6-3 10-8 |
| US Open | H. Dellien def. M. Echargui | 4-6 4-6 |
| US Open | T. Schoolkate def. J. Secord | 3-6 2-6 |
| US Open | S. C. Hong def. N. Basilashvili | 6-3 7-6 |
| US Open | S. Costoulas def. J. Ruggeri | 7-5 6-4 |
| US Open | E. Kalieva def. K. Mladenovic | 6-2 1-6 6-1 |
| US Open | V. Valdmannova def. M. L. Carle | 6-3 6-3 |
| Philadelphia (Usa) | J. Grabher def. A. Krueger | 6-4 6-4 |
| Winston-Salem | M. Damm def. D. Medvedev | 5-7 3-6 |
| Winston-Salem | M. Rottgering def. T. Machac | 6-2 7-6 |
| Monterrey | Y. Starodubtseva def. J. Tjen | 4-6 3-6 |