Nick Kyrgios returns to Stefanos Tsitsipas during their third round match at Wimbledon on Saturday. Kyrgios won in four sets. Kirsty Wigglesworth/Associated Press

WIMBLEDON, England — Nick Kyrgios cursed at the Wimbledon chair umpire and asked, “Are you dumb?” He demanded to see a Grand Slam supervisor after questioning why his opponent, Stefanos Tsitsipas, didn’t forfeit their ever-contentious, never-boring match for angrily hitting a ball into the stands after dropping the second set.

Unsatisfied with the response, Kyrgios asked, “What are you talking about, bro?” Then came this: “Bring out more supervisors. I’m not done. Bring ’em all out. I don’t care. … I’m not playing until we get to the bottom of this.”

Narrator: He did continue to play Saturday. And the unpredictable, unseeded Kyrgios won, beating No. 4 seed Tsitsipas 6-7 (2), 6-4, 6-3, 7-6 (7) to reach the fourth round at the All England Club for the first time since 2016 – then was criticized by Tsitsipas for having “a very evil side.”

“It’s constant bullying. That’s what he does. He bullies the opponents,” said Tsitsipas, the 2021 French Open runner-up, who also lost to Kyrgios on grass at a tournament in Halle, Germany, last month. “He was probably a bully at school himself. I don’t like bullies.”

There was more, so much more, from underarm serves hit by the Kyrgios – including one between his legs – to the three shots purposely smacked right at him by Tsitsipas. A total of three code violations were called by chair umpire Damien Dumusois, one on Kyrgios for an audible obscenity, and two on Tsitsipas for ball abuse, earning a point penalty.

Told of Tsitsipas’ “bully” comment, Kyrgios laughed and shook his head.

“He was the one hitting balls at me. He was the one who hit a spectator. … I didn’t do anything. Apart from me going back and forth with the umpire, I did nothing toward Stefanos today that was disrespectful, I don’t think,” Kyrgios said at his news conference, wearing a T-shirt with former NBA player Dennis Rodman’s name on it.

“If he’s affected by that today, then that’s what’s holding him back,” Kyrgios said about Tsitsipas. “Because someone can just do that, and that’s going to throw him off his game like that? I just think it’s soft.”

There even was some terrific tennis along the way, with the players combining for 118 winners. It all took 3 hours, 17 minutes, with nary a dull moment, and finished so late that the retractable roof at No. 1 Court was shut and the artificial lights turned on midway through the fourth set.

Earlier in the women’s draw, top-ranked Iga Swiatek – who was unbeaten since February and sure seemed unbeatable, compiling 37 consecutive match wins and six consecutive tournament titles – lost in the third round with a 6-4, 6-2 loss to 37th-ranked Alize Cornet of France.

“I know I didn’t play good tennis. I was pretty confused about my tactics,” said Swiatek, a two-time French Open champion who has never advanced past the fourth round at the All England Club. “For sure, it wasn’t a good performance for me.”

It was not just the match’s winner that was unexpected. It was also just how one-sided this 1-hour, 33-minute encounter was.

“This kind of match is what I’m living for, it’s what I’m practicing for every day,” Cornet said. “It really drives me. I knew I could do it. Somehow, I had this belief.”

No woman had won as many matches in a row as Swiatek since Martina Hingis also put together a run of 37 in 1997.

Cornet is a 32-year-old who reached her first quarterfinal in 63 appearances at majors by getting that far at the Australian Open in January. Now she’s a win away from getting that far again, facing unseeded Ajla Tomljanovic of Australia next.

Tomljanovic, a quarterfinalist a year ago at the All England Club, eliminated 2021 French Open champion Barbora Krejcikova 2-6, 6-4, 6-3.

In a contest between two young Americans – and a rematch of the 2017 U.S. Open junior final – No. 20 seed Amanda Anisimova came back to top No. 11 Coco Gauff 6-7 (4), 6-2, 6-1 at Centre Court. Gauff, who is 18 and lost to Swiatek in the final at Roland Garros last month, led 3-0 at the start, before the 20-year-old Anisimova’s forceful baseline game eventually began to hold sway. Anisimova took that opening set to a tiebreaker, which she then led 4-1, but Gauff grabbed the next half-dozen points.

That could have been trouble for Anisimova. She didn’t let it derail her. Instead, she kept taking control of groundstroke exchanges while also doing a fantastic job of handling Gauff’s serve, which reached 123 mph Saturday.

In all, Anisimova won more than half of Gauff’s service games and saved 10 of the 13 break points she faced.

Next for Anisimova is a match against Harmony Tan, who is making her Wimbledon debut and defeated Williams in the first round last Tuesday.

Other women’s fourth-round matches Monday will be No. 17 Elena Rybakina vs. Petra Martic, and 2019 champion Simona Halep against No. 4 Paula Badosa, who got past two-time Wimbledon winner Petra Kvitova 7-5, 7-6 (4).

A total of four American men are into the round of 16 at the All England Club for the first time since 1999 after victories Saturday by No. 11 Taylor Fritz and unseeded Brandon Nakashima. They join No. 23 Frances Tiafoe and No. 30 Tommy Paul, who advanced a day earlier.

But the real drama came in the Kyrgios-Tsitsipas match.

Tsitsipas held a pair of set points to force a fifth, but Kyrgios saved both, the latter with a half-volley winner after serving-and-volleying on a second serve.

Kyrgios, a 27-year-old from Australia, converted his second match point with a drop shot, then roared. That sort of skill has always been evident from Kyrgios, who twice has been a Grand Slam quarterfinalist. Also long obvious: Kyrgios often appears more interested in entertaining or arguing than in doing whatever it takes to finish on the right side of the score.

On Saturday, during one changeover midway through the fourth set, Kyrgios sat in his chair, barking between bites on a banana. Was he shouting at an official? At the folks seated in his guest box? At himself? Hard to know with him, sometimes.

He was fined $10,000 by the tournament for unsportsmanlike conduct at his first-round match, which he ended by spitting the direction of a spectator he said was heckling him. It is the largest of the 22 prize money penalties issued in Week 1.

His issues with Dumusois began in the first set, when he was disturbed by a reversed call by a line judge and wanted that official removed. Didn’t happen.

“There comes a point where you really get tired of it, let’s say,” said Tsitsipas, a 23-year-old from Greece. “The constant talking, the constant complaining.”

After Kyrgios broke to grab the second set, Tsitsipas swatted a ball with a backhand into the crowd. The ball appeared to ricochet off a wall, but what wasn’t entirely clear was whether it landed on anyone.

Tsitsipas apologized for that afterward, saying it stemmed from frustration created by “all the circus show going on, on the other side of the net.”

“I didn’t hit any people. It did hit the wall, thank God,” he said, and acknowledged he was trying to hit his foe with some other balls aimed right at his body. “For sure I’m never doing that again. It’s my responsibility, for sure.”

That drew just a warning from Dumusois, which didn’t sit well with Kyrgios.

“You can’t hit a ball into the crowd and hit someone and not get defaulted,” Kyrgios said, bringing up the episode at the 2020 U.S. Open involving Novak Djokovic, who was ejected from a match after inadvertently hitting a ball that struck a line judge in the throat.

At one point, Kyrgios told Dumusois: “You don’t know how to play, so how about you don’t tell me how to play? … Bro, the people want to see me, not you.”

They will get another chance to see Kyrgios on Monday, when he faces Nakashima for a spot in the quarterfinals.