PARIS — Aryna Sabalenka’s diamonds sparkled in the sun during a first-round victory at the heat-soakedFrench Open on Tuesday.

The top-ranked Sabalenka looked light on her feet on Court Philippe-Chatrier, despite wearing two thick necklaces in a 6-4, 6-2 win against Jessica Bouzas Maneiro.

“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 95 degrees.

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, 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.”

Stefanos Tsitsipas won 6-2, 3-0 over Alexandre Muller, who retired with a right calf injury.