WIMBLEDON, England -- Facing her first seeded player of the tournament, Elena Rybakina had to play only five games Monday to advance to the quarterfinals.

No. 13 seed Beatriz Haddad Maia retired with a back injury trailing 4-1.

“Definitely not the way I wanted to finish the match,” Rybakina told reporters later, “but happy to be again in the quarterfinal. Hopefully Maia, she’s going to get better soon.”

No.3 Rybakina will next play No.6 Ons Jabeur, who quickly took care of No.9 Petra Kvitova later Monday.

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Rybakina has now won 14 of her first 15 matches at the All England Club, a feat matched only by Billie Jean King and Maria Sharapova. Only Iga Swiatek (41) and Aryna Sabalenka (38) have won more matches than her 35.

Through four matches, Rybakina has now won 32 of 33 service games, facing just seven break points.

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It seemed destined to be a classic matchup: Both players, at six feet tall with long limbs, have games built for grass and are capable of big groundstrokes and even bigger serves. 

Previously, Haddad Maia had won the only two matches they’d played, earlier this year in Dubai and, via retirement, Stuttgart.

Rybakina’s consistently overpowering serve carried her to the title a year ago and the first game offered a window into that continuing trend. Rybakina won the first point with a 112 mph ace down the middle, the second on a 104 mph offering that was unreturnable. That was followed by a double fault, a 108 mph unreturnable serve and -- at last -- an actual rally that saw Haddad Maia dump a backhand in the net.

Rybakina broke through in the fourth game when the Brazilian’s backhand found the net. After that point, though, Haddad Maia stopped along the baseline and appeared to be in pain. During a medical timeout, in a standing position, a trainer manipulated her lower back. After a brief conversation, Haddad walked gingerly off the court.

She returned several minutes later but was still moving slowly and seemed to be in pain. Rybakina won the next game at love and with tears in her eyes Haddad Maia was forced to retire after only 27 minutes. The two players met on her side with an embrace.

It’s been seven years since the defending champion got this far the next year; Serena Williams repeated in 2016.

After mounting a three-set comeback in her first-round match against Shelby Rogers, Rybakina said she had been nervous.

“Now I’m feeling much better and more confident coming and playing on Centre Court,” she said. “It is different from the first round. I think it was just overall the atmosphere and the nerves to play the first match to get used to the grass, just to play some matches here.

“I think now mentally I’m much better. Physically also good now. Yeah, hopefully I just continue like this.”