Kristina Penickova

Kristina Penickova (; born September 11, 2009) is an American tennis player. She has a career-high ITF junior combined ranking of No. 3, achieved on January 27, 2025. She won the girls' doubles titles at the 2025 Australian Open and the 2025 Wimbledon Championships.

Early life Penickova was born in Campbell, California, to Tomáš Pěnička and Olga Hostáková. Her parents are both former tennis players from the Czech Republic; her father was ranked as high as No. 884 by the ATP. Her uncle is former Czech ice hockey player Martin Hosták. Her grandparents live in Hradec Králové.

Her identical twin sister, Annika, also plays tennis. Both sisters are coached by their father. They began their careers at Bay Club Courtside in Los Gatos, California, and currently live and train at the USTA National Campus in Orlando, Florida.

Career

Junior years In October 2022, Penickova made her ITF Juniors debut at the J60 event in Arequipa, where she reached the final. In February 2023, she and her sister reached the doubles semifinals of the Petits As. Later that year, she competed in the girls' 14&U singles tournament of the Wimbledon Championships and was selected to represent the United States at the ITF World Junior Championship in Prostějov. In September 2023, she and her sister reached the girls' doubles quarterfinals of the US Open. The following month, unseeded at the French Open, she reached the girls' singles semifinals with wins over Emily Sartz-Lunde, , Mia Pohánková, and Rose Marie Nijkamp. Later that year, she and her sister participated in the Garden Cup, an exhibition at Madison Square Garden. She also represented the United States at the Junior Billie Jean King Cup and won the title with Tyra Caterina Grant and Julieta Pareja.

In January 2025, she reached both the girls' singles and doubles finals of the Australian Open; she was the first American to reach the girls' singles final of the tournament since 2012. In the doubles final, she and her sister won in straight sets against Emerson Jones and Hannah Klugman. She lost the singles final to Wakana Sonobe. At the French Open, she and her sister reached the girls' doubles semifinals. At Wimbledon, she and Vendula Valdmannová won the girls' doubles title, defeating compatriots Thea Frodin and Julieta Pareja in the final. The following month, she paired with Frodin to win the girls' doubles title at the USTA Girls 18s National Championships in San Diego. Later that year, she finished runner-up at the ITF Junior Finals in Chengdu.

Professional In August 2024, Penickova received a wildcard into the women's singles qualifying competition of the US Open, but lost in the first round. Two months later, she reached her first professional singles and doubles finals at the W15 Magic Hotel Tours series in Monastir. In doubles, she and her sister won the title defeating and Inês Murta in the final. In singles, she lost to .

Performance timelines

Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup, United Cup, Hopman Cup and Olympic Games are included in win–loss records.

Singles Current through the 2026 US Open.

Doubles Current through the 2025 US Open.

ITF Circuit finals

Singles: 2 (2 runner-ups) Legend W15 tournaments (0–2)Finals by surfaceHard (0–2)

Doubles: 6 (5 titles, 1 runner-up) Legend W35 tournaments (2–1) W15 tournaments (3–0)Finals by surfaceHard (5–1)

Junior Grand Slam tournament finals

Singles: 1 (runner-up)

Doubles: 2 (2 titles)