Sixth seed Dominika Cibulkova was knocked out of Roland Garros on Wednesday, going down in straight sets to World No 114 Ons Jabeur.
The 22-year-old Tunisian had never gotten past the first round of a Grand Slam prior to this week's event in Paris, but now finds herself in the third round after a stunning 6-4, 6-3 upset victory over the seventh seed.
Jabeur – whose career highlight came in 2011 when she French Open junior event – also becomes the first Arab woman to reach the third round of a Grand Slam.
Ons she goes!
— Roland-Garros (@rolandgarros) May 31, 2017
After only narrowly defeating Miyu Kato in the final round of qualifying, Jabeur has made the most of her opportunity, defeating Ana Bodgan in the first round before following that up with an unlikely win over Cibulkova.
The first set came down to a solitary break point in the ninth game, which Jabeur converted for a 5-4 lead before holding on to serve out the set.
Cibulkova needed a response and she looked to have found it with an early break for a 3-1 lead, but Jabaur went on a tear, winning the final five games to leave Cibulkova shell shocked.
Jabeur finished with a whopping 30 winners and only 17 unforced errors, breaking serve four times to set up a third-round clash with 2015 semifinalist Timea Bacsinszky.
Ons Jabeur is th 1st ever Arab woman to reach a Slam 3rd round in singles. Claims her 1st top10 win 6-4, 6-3 v Cibulkova. On brink of top100 pic.twitter.com/Csg0LDqVvE
— Reem Abulleil (@ReemAbulleil) May 31, 2017
Bacsinszky very much looked the part as she dispatched Madison Brengle 6-0, 6-2 on Wednesday.
Other second-round results on the day saw 11th seed Caroline Wozniacki and 13th seed Kristina Mladenovic book their places in the third round.
Wozniacki blanked Françoise Abanda 6-0, 6-0, while Mladenovic saw off Sara Errani 6-2, 6-3.
Eighth seed Svetlana Kuznetsova also advanced late in the evening, beating Océane Dodin 7-6 (7-5), 5-7, 6-3 in a testing encounter.
Earlier, there were wins for defending champion Garbine Muguruza and Venus Williams, while Petra Kvitova was knocked out by Bethanie Mattek-Sands, going down 7-6 (7-5), 7-6 (7-5).
The Czech star made her return to tennis at Roland Garros this week after being injured during an intruder attack at her home last December, and was happy to be back despite the defeat.
All of Wednesday's results
Ons Jabeur (Tunisia) beat 6-Dominika Cibulkova (Slovakia) 6-4 6-3
32-Zhang Shuai (China) beat Aliaksandra Sasnovich (Belarus) 6-2 4-6 6-3
13-Kristina Mladenovic (France) beat Sara Errani (Italy) 6-2 6-3
30-Timea Bacsinszky (Switzerland) beat Madison Brengle (U.S.) 6-0 6-2
Elise Mertens (Belgium) beat Richel Hogenkamp (Netherlands) 6-3 6-4
11-Caroline Wozniacki (Denmark) beat Francoise Abanda (Canada) 6-0 6-0
Catherine Bellis (U.S.) beat 18-Kiki Bertens (Netherlands) 6-3 7-6(5)
4-Garbine Muguruza Blanco (Spain) beat Anett Kontaveit (Estonia) 6-7(4) 6-4 6-2
Shelby Rogers (U.S.) beat Cagla Buyukakcay (Turkey) 7-6(6) 6-4
27-Yulia Putintseva (Kazakhstan) beat Johanna Larsson (Sweden) 6-3 1-6 6-3
Bethanie Mattek-Sands (U.S.) beat 15-Petra Kvitova (Czech Republic) 7-6(5) 7-6(5)
23-Samantha Stosur (Australia) beat Kirsten Flipkens (Belgium) 6-2 7-6(6)
10-Venus Williams (U.S.) beat Kurumi Nara (Japan) 6-3 6-1
Lesia Tsurenko (Ukraine) beat Ekaterina Makarova (Russia) 6-2 6-2
Jelena Ostapenko (Latvia) beat Monica Puig (Puerto Rico) 6-3 6-2
8-Svetlana Kuznetsova (Russia) beat Océane Dodin (France) 7-6 (7-5), 5-7, 6-3