Like millions of us during the 2020 world COVID pandemic, Sabina Czauz was bored and needed a new sport to try.

The Colorado teenager, who was born with neuropathy, a nerve condition, had been a wheelchair basketball enthusiast for years, but hadn’t tried tennis.

She decided to take up the sport “and loved it right away,” Czauz said. “I thought it was so fun, and it was distanced enough that you could play it during COVID.”

That decision to play tennis has now made Czauz a Grand Slam champion.

Make that a two-time Slam champion, something she accomplished all in one day on Friday after winning girls' singles and doubles titles at the US Open Junior Wheelchair Championships, the three-day tournament encompassed with in the dates of the senior US Open tournament for men's, women's and quad division players.

The 18-year-old got off to a big first-set lead in the girls' singles final, hung onto it, and then dominated the second set over Belgium’s Luna Gryp to win, 7-5 6-2 and grab her first singles Slam title.

Later, Czauz and Seira Matsuoka won the doubles crown with a 6-0 6-1 triumph over Lucy Heald and Ela Porges.

“It means just everything,” Czauz, from Thornton, Colorado said. “I started five years ago as a random someone who couldn’t hit a ball very well. And now to finally have won it, it’s really amazing, truly.”

Czauz became the first American to win both junior singles and doubles titles at the same Grand Slam event.

“I felt the crowd behind me the whole time, even if it was just my family,” Czauz said.

Czauz gave a lot of credit to coach Kendall Chitambar, and admitted she had a long way to go as she tries to play professional wheelchair tennis.

“I feel like I’m improving a lot all the time, and I know there’s still a long way to go,” she added.

Gryp, a 16-year-old from Belgium, said she was thrilled to be in the final.

“I get pretty nervous every time and just try to have no expectations, just do what I can do and see what happens,” Gryp said. “I hope we can make wheelchair tennis big in Belgium someday.”

In the junior boys' wheelchair singles final, Austria’s Maximillian Taucher, the No. 1 seed, defeated Belgian Alexander Lantermann, 6-4 6-1. It’s Taucher’s second singles Slam in 2025; he also captured the crown at Roland Garros.

In the junior boys doubles wheelchair final, Taucher and Ruben Harris defeated Luiz Calixto and Tomas Majetic, 6-3 6-3.

The men’s wheelchair semifinals may have produced the match of the day, as No. 4 seed Gustavo Fernandez, seeking the only Grand Slam singles title he doesn’t own, moved into the US Open final for the first time in 11 years, beating No. 2 seed Alfie Hewett, 6-7 6-1 7-5.

“Resilience was very important for me, because for a long period of the match I was behind and not playing great,” Fernandez said. "So being able to keep going, and for passages of the game my game was there. I’m very excited.”

On Saturday Fernandez will play No. 1 seed Tokido Oda, the 19-year-old who also has never won the US Open; he defeated Martin de la Puente, 6-3 6-3.

Fernandez is already a winner at this US Open, as he and Oda defeated Hewitt and Gordon Reid, 6-1 2-6 (10-6) in the doubles final.

In the quad singles semis, the top two seeds advanced, as Niels Vink defeated rival Guy Sasson, 6-3 6-4, overcoming a 4-1 deficit in the second set, while No. 2 seed Sam Schroder defeated Andy Lapthorne, 6-1 6-0. The finals are Saturday.

In the quad doubles, Sasson and Vink teamed up to win the title, defeating Francisco Cayulef and Gonzalo Enrique Lazarte, 6-1 6-1.

The women’s wheelchair singles final on Saturday will be contested by top seed Yui Kamiji, who last won the US Open in 2017, and Chinese No. 3 seed Li Xiaohui, seeking her first singles Grand Slam title.

Li and Wang Ziying won the doubles title, with a 6-4 7-6 victory over Diede de Groot and Zhenzhen Zhu.