Tallon Griekspoor saved four match points in upsetting top seed Daniil Medvedev 2-6, 7-6 (7), 7-5 in the quarterfinals at the Dubai Tennis Championships on Thursday. The Dutchman advanced to his eighth career ATP Tour semifinal (3-4 record) in knocking off Russia's Medvedev,

Griekspoor came from behind to triumph 2-6 7-6 (9-7) 7-5 over the Russian at the Dubai Tennis Championships on Thursday. Medvedev had four match points across Griekspoor's final two service games of the second set, yet each one was clawed back.

World no. 6 Daniil Medvedev experienced another blow in Dubai. The former champion wasted four match points versus Tallon Griekspoor in the quarter-final and fell 2-6, 7-6, 7-5 in two hours and 36 minutes!

Top-seeded Daniil Medvedev of Russia survived a day of upsets at the Dubai Tennis Championships, moving to the second round after a 6-4, 7-6 (4) win over Germany's Jan-Lennard Struff.

World No. 6 Daniil Medvedev failed to reach the semifinals of the Dubai Tennis Championships. In the quarterfinals, the Russian tennis star lost in three sets—6:2, 6:7 (7:9), 5:7—to world No. 47 Tallon Griekspoor (Netherlands). The match lasted 2 hours and 37 minutes.