Ajla Tomljanovic has reached her first Grand Slam quarterfinal at Wimbledon when British teenager Emma Raducanu had to stop playing after a medical timeout in the second set.

It was not immediately clear what Raducanu’s health issue was. She was visited by a trainer on court and then they left for the locker room. Shortly after, the chair umpire announced that Raducanu could not continue.

The 75th-ranked Tomljanovic was leading 6-4, 3-0 when the match ended under the closed roof at No. 1 Court.

“I’m actually really kind of shocked and it’s obviously so bittersweet, because Emma must be really, really hurt if she came to the decision to retire,” Tomljanovic said.

She will face No. 1 Ash Barty in an all-Australian quarterfinal on Tuesday.

Raducanu is an 18-year-old who is ranked 338th and received a wild-card invitation from the All England Club so she could make her Grand Slam debut and participate in only her second tour-level event.

___

More AP tennis coverage: https://apnews.com/hub/tennis and https://twitter.com/AP_Sports