Stefanos Tsitsipas secured a straight-sets victory over fourth-seeded Daniil Medvedev at the Qatar Open on February 18, 2026. The Greek player advanced to the quarterfinals, where he will face Andrey Rublev. Other notable results included wins for Jannik Sinner and Arthur Fils.
On February 18, 2026, the ATP 500 Qatar Open in Doha delivered several compelling matches in the round of 16. Stefanos Tsitsipas, ranked No. 33 due to recent injuries and coaching changes, upset fourth-seeded Daniil Medvedev 6-3, 6-4. Tsitsipas served strongly throughout, offering no breakpoints to his opponent. This marks his second straight-sets win in the tournament, following a victory over Echargui in the opening round. He is set to meet fifth-seeded Andrey Rublev in the quarterfinals on February 19.
Rublev, a two-time champion in Doha, has been in solid form, defeating de Jong in the first round after trailing 0-3 and then demolishing Marozsan in the second round without facing breakpoints.
Meanwhile, world No. 1 Jannik Sinner continued his dominant run, beating Alexei Popyrin 6-3, 7-5. Sinner has now won 50 consecutive matches against players outside the top 50. After the match, he commented, "I just try to do my best. I respect every player. But I try to play my best tennis always if I can. I know the ranking at the end of the day is just a number. I feel like everyone is playing high intensity and high quality." His next challenge is eighth-seeded Jakub Menšík in the quarterfinals.
Arthur Fils, who recently hired Goran Ivanisevic as his head coach following a back injury that sidelined him last season, defeated Quentin Halys in straight sets. Fils saved a set point in the second-set tiebreak and will face Jiri Lehecka next. Lehecka advanced by beating Brooksby and Bergs in straight sets, breaking serve effectively against the former.
These results highlight a competitive draw as the tournament progresses toward the semifinals.
