Sabalenka's necklaces sparkle in the sun during French Open win. Gauff, Osaka, Sinner advance

“Diamonds, I don’t really feel the heaviness, but I can imagine how it looks from the outside,” said Sabalenka, the tournament runner-up last year to Coco Gauff. “So I feel pretty comfortable. For me, it’s important to look good.”

The four-time major winner was initially going to wear three necklaces but said she thought that might be too much.

“It probably sounds a bit crazy, but when I feel good about what I’m wearing, how I look on court, I tend to perform much better,” Sabalenka said. "I like to bring a little bit of a fashion on the tennis court. I know the dress that I will wear on the Grand Slam, and I just try to come up with something to match the outfit."

Sabalenka said she wasn't worried about protecting her jewelry when she's off the court.

“I have my fiancé. He’s kind of like my security,” she said, smiling. “My physio does jujitsu, so I feel pretty secure walking around. If I go somewhere, I don’t go alone.”

Gauff began her title defense with a 6-4, 6-0 victory over fellow American Taylor Townsend, while four-time major winner Naomi Osaka beat Laura Siegemund 6-3, 7-6 (3) on Court Suzanne-Lenglen wearing a sequined gold playing dress.

Frenchwoman Lois Boisson, who made a surprise run to the semifinals last year when she was ranked 361st, lost 6-2, 6-2 to the 22nd-seeded Anna Kalinskaya.

For a third consecutive day, the temperature in Paris rose far above normal, reaching a scorching 35 degrees Celsius (95 Fahrenheit).

“I’m from Florida, so this is nothing. Shout-out Delray Beach,” said Gauff, who kept her spare rackets in a court-side cooler during the match.

Medvedev loses early again

The unusually hot conditions made the courts faster than usual.

Daniil Medvedev usually thrives in such conditions but he struggled in a five-set loss to 97th-ranked Australian opponent Adam Walton.

Walton, who received a wild card invitation from tournament organizers, beat Medvedev 6-2, 1-6, 6-1, 1-6, 6-4. It was Medvedev's second straight first round exit here and third in four years.

“I know why I don’t really play my best in Roland Garros, but if I say it, it’s (making) excuses,” he said. “So I keep it to myself.”

Playing in the night session, top-ranked Jannik Sinner routed 171st-ranked French wild card entry Clement Tabur 6-1, 6-3, 6-4 to extend his winning streak to 30 matches as he chases the only big title missing in his tennis career.

Stefanos Tsitsipas, the 2021 runner-up to Novak Djokovic, was leading 6-2, 3-0 against Alexandre Muller when his French opponent retired. Muller injured his right calf, three months after injuring his left calf.

Ninth-seeded Alexander Bublik was beaten 7-5, 6-7 (6), 6-4, 7-5 by Jan-Lennard Struff.

Alexander Blockx withdrew from the tournament with a right ankle sprain, making Alex de Minaur — his scheduled second round opponent — the first player into the third round.

Rising star

French teenager Moïse Kouamé made the perfect start to his French Open career with a 7-6 (4), 6-2, 6-1 win over Marin Cilic.

The 17-year-old Kouamé won one day after 39-year-old Frenchman Gael Monfils made his last appearance at Roland Garros.

The teenager raised his arms in triumph after defeating the 37-year-old Cilic, who won the 2014 U.S. Open, finished runner-up at two other majors, and reached the French Open semifinals in 2022.

The ATP Tour said No. 318-ranked Kouamé became the first man born in 2008 or later to win a Grand Slam match.

In March, he became the youngest winner in Miami Masters history when he beat Zachary Svajda in the first round — earning a congratulatory message from Djokovic.

AP tennis: https://apnews.com/hub/tennis