Sinner overcomes cramps, heat to continue Australian Open title defense. Djokovic gets 400th win

MELBOURNE, Australia (AP) — Limping and desperately trying to stretch out cramps in his arms and legs, Jannik Sinner had just gone down a break in the third set when the extreme heat rules saved him.

Play was suspended for eight minutes while the roof was closed on Rod Laver Arena on Saturday afternoon, and the two-time defending Australian Open champion returned a revitalized man.

After being on the verge of an unlikely exit — one of his coaches, Darren Cahill, was urging the 24-year-old Italian just to stick it out for a few more games — Sinner won five of the next six games to take the set against No. 85-ranked Eliot Spizzirri.

Another 10-minute "cooling break" between the third and fourth sets followed — an allowance under the extreme heat policy — and Sinner returned for a 4-6, 6-3, 6-4, 6-4 victory that highlighted a dramatic contrast of intense light and shade.

“I struggled physically today. I got lucky with the heat rule," Sinner said, agreeing that the cooler indoor conditions suited him much more than the energy-sapping heat of the first two sets. “I try to stay calm even in a moment like this. If he keeps playing the way he was playing, maybe I was dropping a little bit, maybe my tournament was over today. I don’t know."

Spizzirri was magnanimous about it, adding: “ That’s the rules of the game, and, you know, you got to live with it.”

Novak Djokovic became the first player ever to notch 400 match wins at the majors when he beat Botic van de Zandschulp 6-3, 6-4, 7-6 (4) in a night match.

The 24-time major winner improved his win-loss record to 102-10 at the Australian Open, equaling Roger Federer’s career haul for the most-ever match wins at the season’s first major.

Two-time Australian Open champion Naomi Osaka withdrew because of an abdominal injury before her scheduled third-round match against Australian qualifier Maddison Inglis, ending a campaign noted strikingly for fashion and friction.

That sent Inglis into a fourth-round match against No. 2-ranked Iga Świątek, who had a 6-1, 1-6, 6-1 win over Anna Kalinskaya.

No. 4 Amanda Anisimova beat Peyton Stearns 6-1, 6-4 in an all-American encounter and will next face Wang Xinyu, who upset No. 13 Linda Noskova.

No. 5 Elena Rybakina advanced to a fourth-round match against No. 21 Elise Mertens.

The 40-year-old Stan Wawrinka lost 7-6 (5), 2-6, 6-4, 6-4 to No. 9 Taylor Fritz and then grabbed two beers from a courtside ice box, cracked the cans with the tournament director and bid farewell to the crowd. “Cheers everybody! ” he said.

Fritz will next face No. 5 Lorenzo Musetti, who held off Tomas Machac 5-7, 6-4, 6-2, 5-7, 6-2 to become the third Italian man to reach the fourth round.

No. 8 Ben Shelton beat Valentin Vacherot of Monaco, 6-4, 6-4, 7-6 (5) on Margaret Court Arena and said having the roof closed “just amplified the noise.”

The 37-year-old Marin Cilic, U.S. Open champion in 2014 and Australian Open runner-up four years later, lost in four sets to father-to-be Casper Ruud.

An earlier start than usual on Day 7 was no worries for defending champion Madison Keys and Jessica Pegula. No. 9-seeded Keys beat Karolina Pliskova 6-3, 6-3 and No. 6 Pegula defeated Oksana Selekhmeteva 6-3, 6-2.

Next up for the two Americans, and podcast pals, is a fourth-round encounter against each other.

Play was suspended on outside courts for five hours from the mid-afternoon until around 7:30 p.m. local time.

The temperature was around 35 degrees Celsius (95 Fahrenheit) when the tournament’s so-called heat scale hit a maximum of 5 in the mid-afternoon. The temperature Saturday didn’t quite reach the forecast maximum of 40 degrees Celsius (104 Fahrenheit). The maximum forecast for Sunday is 24 C (75 F).

Sinner will next play fellow Italian Luciano Darderi, who beat No. 15 Karen Khachanov 7-6 (5), 3-6, 6-3, 6-4.

Reflecting on his drama at 3-1 down in the third set, the No. 2 seed said he was just trying to survive.

“It started with the legs. Got to the arms. I was cramping a bit all over,” Sinner said. “This is an area I know I need to improve.”

In the second set, Sinner was given a rare time violation by chair umpire Fergus Murphy as he was preparing to serve. In a show of sportsmanship, Spizzirri intervened, approaching the umpire and saying he hadn't been ready to receive.

He had the crowd on his side, until Sinner's movement became visibly wobbly.

Under the roof — with the glare gone, the temperature easing across the third and fourth sets and the radiated heat from the court plummeting — the momentum swung.

“I don’t know if he got saved by it,” Spizzirri said. “I smiled a little bit when the heat rule went into effect, just because it was kind of funny timing. But at the same time, the game at 2-1 in the third set was when it hit, I think it’s 5 (on the heat scale), which means that the heat rule is in effect. So whenever that game was over, whether I broke or whether he held, we were going to close the roof.”

Iga Swiatek of Poland reacts after defeating Anna Kalinskaya of Russia in their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Aaron Favila)

Stan Wawrinka of Switzerland holds up a beer following his third round loss to Taylor Fritz of the U.S. at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Asanka Brendon Ratnayake)

FILE - Naomi Osaka of Japan walks onto Rod Laver Arena for her first round match against Antonia Ruzic of Croatia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 20, 2026. (AP Photo/Asanka Brendon Ratnayake, File)

Novak Djokovic of Serbia reacts after defeating Botic van de Zandschulp of the Netherlands in their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Jannik Sinner, left, of Italy walks from the court with Eliot Spizzirri of the U.S. after winning their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dar Yasin)

Eliot Spizzirri of the U.S. plays a backhand return to Jannik Sinner of Italy during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Jannik Sinner of Italy receives treatment from trainers during his third round match against Eliot Spizzirri of the U.S.at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Jannik Sinner of Italy rests at his coaching box during his third round match against Eliot Spizzirri of the U.S. at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Jannik Sinner of Italy takes a drink during his third round match against Eliot Spizzirri of the U.S. at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Amanda Anisimova of the U.S. plays a backhand return to compatriot Peyton Stearns during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Aaron Favila)

Jessica Pegula, left, of the U.S. is congratulated by Oksana Selekhmeteva of Russia following their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Aaron Favila)

Madison Keys, left, of the U.S. is congratulated by Karolina Pliskova, right, of the Czech Republic following their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Madison Keys of the U.S. waves after defeating Karolina Pliskova of the Czech Republic in their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

Naomi Osaka of Japan walks onto court for her second round match against Sorana Cirstea of Romaniaat the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 22, 2026. (AP Photo/Dita Alangkara)

Ben Shelton of the U.S. reacts after defeating Dane Sweeny of Australia during their second round match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 22, 2026. (AP Photo/Asanka Brendon Ratnayake)

Oksana Selekhmeteva of Russia serves to Jessica Pegula of the U.S. during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Aaron Favila)

Jessica Pegula of the U.S. plays a backhand return to Oksana Selekhmeteva of Russia during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Aaron Favila)

Madison Keys of the U.S. plays a forehand return to Karolina Pliskova of the Czech Republic during their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 24, 2026. (AP Photo/Dita Alangkara)

TUCSON, Ariz. (AP) — A glove containing DNA found a couple of miles from the Arizona home of “Today” show host Savannah Guthrie ’s missing mother appears to match those worn by a masked person outside her house the night she disappeared, the FBI said Sunday.

The development comes as law enforcement gathers more potential evidence in the search for Nancy Guthrie, 84, which heads into its third week.

Nancy Guthrie was last seen at her Tucson home on Jan. 31 and was reported missing the following day. Authorities say her blood was found on the front porch. Purported ransom notes were sent to news outlets, but two deadlines for paying have passed.

Authorities have expressed concern about Nancy Guthrie’s health because she needs vital daily medicine. She is said to have a pacemaker and have dealt with high blood pressure and heart issues, according to sheriff’s dispatcher audio on broadcastify.com.

Here's what to know about her disappearance and the search to find her:

The FBI on Tuesday released surveillance videos of a person wearing a handgun holster outside Guthrie’s front door the night she vanished. A porch camera recorded video of the person with a backpack who was wearing a ski mask, long pants, jacket and gloves.

On Thursday, the FBI called the person a suspect. It described him as a man about 5 feet, 9 inches (1.75 meters) tall with a medium build. The agency said he was carrying a 25-liter “Ozark Trail Hiker Pack” backpack.

On Sunday, the FBI said in a statement that a glove, found in a field near the side of a road about 2 miles (3.2 kilometers) from the home, had been sent off for DNA testing. The agency said that it received preliminary results Saturday and was awaiting official confirmation.

Late Friday, law enforcement agents sealed off a road about two miles (3.2 kilometers) from Guthrie’s home as part of their investigation. A series of sheriff’s and FBI vehicles, including forensics vehicles, passed through the roadblock.

Investigators also tagged and towed a Range Rover SUV from a nearby restaurant parking lot. The Pima County Sheriff’s Department said the activity was part of the Guthrie investigation.

Investigators collected DNA from Guthrie’s property which doesn’t belong to Guthrie or those in close contact with her, the sheriff's department said. Investigators are working to identify who it belongs to.

Evidence requiring forensic analysis is being sent to the same out-of-state lab that has been used since the beginning of the case, the department said.

The FBI has said approximately 16 gloves were found in various spots near the house, most of which were searchers’ gloves that had been discarded.

The Pima County sheriff and the FBI announced phone numbers and a website to offer tips. Several hundred detectives and agents have been assigned to the case, the sheriff’s department said.

The FBI said it has collected more than 13,000 tips since Feb. 1. The sheriff’s department, meanwhile, said it has taken at least 18,000 calls.

The sheriff’s department has not said whether any tips have advanced the investigation.

On Tuesday, sheriff deputies detained a person for questioning during a traffic stop south of Tucson. Authorities didn’t say what led them to stop the man but confirmed he was released.

The same day, deputies and FBI agents conducted a court-authorized search in Rio Rico, about an hour's drive south of the city.

Savannah Guthrie, her sister and her brother have gone on social media and shared multiple video messages to their mother’s purported captor.

The family’s Instagram videos have shifted in tone from impassioned pleas to whoever may have their mom, saying they want to talk and are even willing to pay a ransom, to bleaker and more desperate requests for the public’s help. A video on Thursday was simply a home video of their mother and a promise to “never give up on her.”

And on Sunday night, Savannah Guthrie posted an Instagram video in which she issued an appeal to whoever abducted her mother or anyone who knows where she is being kept. “It is never too late to do the right thing,” Guthrie said. “And we are here. And we believe in the essential goodness of every human being, that it’s never too late.”

Nancy Guthrie lived alone in the upscale Catalina Foothills neighborhood, where houses are spaced far apart and set back from the street by long driveways, gates and dense desert vegetation.

Savannah Guthrie grew up in Tucson, graduated from the University of Arizona and once worked at a television station in the city, where her parents settled in the 1970s. She joined “Today” in 2011.

In a video, she described her mother as a “loving woman of goodness and light.”

She has credited her mom with holding their family together after her father died of a heart attack in 1988 at age 49, when Savannah Guthrie — the youngest of three siblings — was just 16.

A person places flowers in front of Nancy Guthrie’s home in Tucson, Ariz., on Friday, Feb. 13, 2026. (AP Photo/Ty ONeil)