Second-seeded Elena Rybakina rallied from a set and a break down to defeat Naomi Osaka 4-6, 7-6 (5), 6-4 in their Canadian Open quarterfinal in Toronto on Tuesday.

The 2022 Wimbledon and 2026 Australian Open champion will face fourth-seeded Coco Gauff in the semifinals after the American advanced when Belinda Bencic withdrew with a hip injury.

In the first tour-level meeting between Osaka and Rybakina, the Japanese star made a fast start, breaking in the opening game and maintaining her advantage to take the first set.

The four-time Grand Slam champion then surged to a 4-2 lead in the second set, but Rybakina rallied and prevailed in a tiebreaker to force a deciding set.

In the third set, Rybakina saved four break points before breaking Osaka's serve in back-to-back games to seize control and seal the victory in 2 hours, 33 minutes.

Kazakhstan's Elena Rybakina (R) and Japan's Naomi Osaka shake hands during a National Bank Open tennis match, Toronto, Canada, Aug. 11, 2026. (AP Photo)

"This first game of the match was really tough because it cost me the set," Rybakina said. "In the second I was just trying to stay closer to the score, even if I'm losing.

"It's rare when you don't play some players for so many years you're on tour. She's a great champion. She's a fighter. I knew it would be a tough match."

Earlier Tuesday, Gauff advanced without striking a ball after Bencic withdrew from their quarterfinal, giving the American more time to fine-tune her game ahead of the U.S. Open.

The 2023 U.S. Open champion is into the 16th WTA 1000 semifinal of her career as the 22-year-old chases her first title of the year.

Gauff finished runner-up in Miami and Rome before her Wimbledon campaign ended in a tight semifinal defeat. She has introduced new tactical elements to her game and has looked strong in Toronto, where she has not dropped a set.

The only previous meeting between Gauff and Rybakina also came in Toronto, where the American won in three sets in 2022.