LONDON — Defending Wimbledon champion Barbora Krejcikova lost to No. 10 seed Emma Navarro 2-6, 6-3, 6-4 in the third round on Saturday, extending a recent run of one-and-done winners at the All England Club.

Krejcikova faded in the third set, getting her blood pressure checked at the changeover after Navarro broke her to lead 3-2 at No. 1 Court. Krejcikova ate a banana and drank liquids during the medical timeout, while Navarro walked to her guest box and spoke to her coach.

When play resumed, Krejcikova showed clear signs of being in distress, often leaning over and placing her hands on her knees between points.

“Part of you is telling yourself, ‘Just put a bunch of balls in the court, and that’s all you have to do.’ But then, she’s an amazing player, injuries or no injuries. So that’s not good enough,” said Navarro, who was born in New York, grew up in South Carolina and won the 2021 NCAA championship for the University of Virginia. “And then you trick yourself into taking too much off the ball and not playing the way you want to play. Not an easy challenge, for sure.”

Indeed, Krejcikova managed to break right back to 3-all, before Navarro broke yet again and then held to lead 5-3. Two games later, it was over.

This is hardly Navarro’s first big win on a big stage. Last year, she eliminated Coco Gauff at Wimbledon to reach her first major quarterfinal. Then, in a rematch a couple of months later, Navarro won again at the U.S. Open — where Gauff was the defending champion — en route to her debut in a Slam semifinal.

Whoever ends up winning the Wimbledon women’s title on July 12 will be the ninth champion in the past nine editions of the grass-court Grand Slam tournament. Serena Williams was the last repeat champ in 2016.

Elena Rybakina, the 2022 winner, lost Saturday to No. 23 Clara Tauson 7-6 (6), 6-3;.

As well as Jannik Sinner is playing at Wimbledon, he doesn’t appear to need much in the way of help. Still, he got some Saturday when his opponent, Pedro Martinez, was dealing with a problematic shoulder and often put in first serves at so-so speeds.

The No. 1-ranked Sinner has dropped a record-tying total of only 17 games so far, made his way to the fourth round for the seventh consecutive Grand Slam tournament — he’s collected three such trophies in that span — and never was truly in trouble during a 6-1, 6-3, 6-1 victory over No. 52 Martinez.

Sinner is the second man in the Open era, which began in 1968, to cede just 17 games through three completed matches at the All England Club. The other player to do that, Jan Kodes, lost in the semifinals in 1972.

For Sinner, there’s been zero sign of any sort of inability to move past last month’s French Open final, which he lost to Carlos Alcaraz in five sets despite taking the first two and holding three championship points.

Against Martinez, Sinner — who returned in May from a three-month doping suspension — went up 5-0 after 20 minutes. During that stretch, Martinez managed one winner, while Sinner accumulated 10.

That’s when Martinez took a medical timeout, and a trainer massaged the back of his right shoulder. The Spaniard was delivering first serves as slow as 76 mph, compared with Sinner’s high of 133 mph.

Sinner is headed into a contest Monday against No. 19 Grigor Dimitrov.

Novak Djokovic became only the third player in Wimbledon history to reach 100 victories — after Martina Navratilova (120) and Roger Federer (105) — with his 6-3, 6-0, 6-4 win in the third round over Miomir Kecmanovic.

Djokovic, who has won seven of his 24 Grand Slam titles at the All England Club, took control by winning nine consecutive games from 3-3 in the first set on Centre Court against his Serbian compatriot.