Maria Sakkari upset Iga Świątek 2-6, 6-4, 7-5 on Thursday, advancing to her third Qatar Open quarterfinals. Over two hours and 29 minutes, Sakkari ended a nearly five-year winless streak against the world No. 2.
Świątek, a three-time Qatar Open champion at the event, entered on an 18-2 tournament record. However, she went on to commit 16 backhand errors while struggling at the net throughout the match.
The 30-year-old Greek tennis star took the second set, breaking early for a 2-0 lead. Świątek later leveled, earning two break points while serving in the ninth game. But Sakkari held for 5-4, closing the set on Świątek's 16th backhand error.
In the third set, Sakkari opened a 5-2 lead before Świątek broke back twice to level at 5-5, saving a match point with an ace. A disputed double-bounce call disrupted Sakkari's momentum briefly. She held for 6-5, then earned two more match points. On the third, Świątek put a forehand volley into the net.
"I'm speechless because it's been a while since I had a big win like today," Sakkari said postmatch. "When you drop in the rankings and you're not playing the semis, you start doubting yourself and think you’re never beating those players again."
The Qatar Open win marks the first time Sakkari has recorded two Top 10 wins at the same tournament since the 2022 WTA Finals.
"It's amazing," Sakkari added. "This is one of the best tournaments of the season so it's a huge honor."
How to watch Maria Sakkari in the 2026 Qatar Open semifinals
Sakkari will next face either Karolina Muchova or Anna Kalinskaya in Saturday's Doha semifinals, live on The Tennis Channel.
Tennis's biggest names have hit highs and lows down under over the weekend, with stars like Coco Gauff seeing mixed results at the 2026 United Cup as the annual Australian Open team tune-up tournament heads into its knockout rounds.
World No. 4 Coco Gauff and the reigning champion Team USA are through to the quarterfinals, joined by top WTA competitor and No. 11 Belinda Bencic of Team Switzerland.
Argentina, Australia, Belgium, Czechia, and Greece also punched their tickets to the knockouts, with Tuesday night's final group-stage bout deciding whether No. 2 Iga Świątek and Team Poland or Team Germany will claim the final spot in the quarterfinals.
Thus far in the team competition, however, Gauff has experienced a particularly up-and-down tournament, suffering her first-ever United Cup singles defeat on Monday against No. 42 Jessica Bouzas Maneiro of Spain after causing a stir with her postmatch comments.
"I feel like we're definitely, in tennis, the worst," she told reporters before the singles showdown. "I've always said I wish our country in other places would show up throughout the world as we see smaller countries support."
After taking some heat, the 21-year-old later clarified her position on social media, writing "Trust me I understand the financial aspect of things and know tennis is not accessible for everyone, it was more of a comment for those who are already attending and how I wish they were as passionate as those from other countries."
How to watch Gauff and Team USA at the 2026 United Cup
Gauff will look to return to form against No. 51 Maria Sakkari when Team USA kicks off the 2026 United Cup quarterfinals against Team Greece at 9 PM ET on Tuesday, airing live on the Tennis Channel.