(San Diego) Anastasia Potapova upset seventh-ranked world player Ons Jabeur 6-4, 7-6 (4) on Wednesday to advance to the quarterfinals of the San Diego Open.

Potapova, 27th in the world, thus had a top 10 player in the world for the fourth time this campaign.

Jabeur, a Tunisian, was the tournament favorite. She only put 39 of her first 85 service balls in play, committed nine double faults and was never really able to get going. Potapova, who is only 22 years old, still admitted after the match that she had to work hard to overcome the three-time Grand Slam finalist.

On the other hand, the Greek Maria Sakkari, third seed, took advantage of the withdrawal of the Colombian Camila Osorio due to an injury to the right thigh to continue her path.

For her part, Frenchwoman Caroline Garcia, second seed, avenged a three-set defeat suffered last month in Cincinnati against Sloane Stephens by winning 6-3, 3-6 and 6-1. Garcia, 10th player in the world, increased her career record against the American to 5-3 and earned her ticket to the quarter-finals.

Fourth-seeded Barbora Krejcikova of the Czech Republic shrugged off eight double faults to oust Ukrainian Anhelina Kalinina, 6-3, 6-2. The guest player also put an end to a lethargy that followed Wimbledon during which she compiled a record of 0-3 without ever winning a set.

Americans Sofia Kenin and Katie Volynets clashed at the same venue where they each won the U.S. under-18 title, with Kenin coming from behind to post a 1-6, 6-4, 6-2 victory .

American Danielle Collins defeated Latvian Jelena Ostapenko 2-6, 6-3, 6-4, while 2021 U.S. university women’s singles titleholder Emma Navarro defeated Aliaksandra Sasnovich, 7- 5, 6-4.

On the other hand, in Hiroshima, the Canadian Rebecca Marino lost 7-5, 3-6 and 6-1 to the American Elizabeth Mandlik in the round of 16. She was the only representative of the maple leaf competing in this tournament.