Annika Penickova

Annika Penickova (; born September 11, 2009) is an American tennis player. She has a career-high combined ITF junior ranking of No. 16, achieved on 3 March 2025. She and her identical twin sister, Kristina Penickova, won the girls' doubles title at the 2025 Australian Open.

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, Kristina, 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 February 2023, Penickova 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. Later that year, she and her sister participated in the Garden Cup, an exhibition at Madison Square Garden.

In January 2025, she and her sister reached the girls' doubles final of the Australian Open, where they won the title with a straight-sets win over Emerson Jones and Hannah Klugman. At the French Open, she and her sister reached the girls' doubles semifinals.

Professional In May 2025, Penickova won her first professional doubles title at the W15 Magic Hotel Tours series in Monastir, partnering her sister and defeating Arina Arifullina and Inês Murta in the final.

ITF Circuit finals

Singles: 3 (1 title, 2 runner-ups) LegendW35 tournaments (1–1)W15 tournaments (0–1)Finals by surfaceHard (1–2)

ResultW–LDateTournamentTierSurfaceOpponentScore Loss 0–1 Oct 2025 ITF Hilton Head Island, United States W15 Hard Kennedy Drenser-Hagmann 1–6, 6–2, 4–6 Win 1–1 Jul 2026 ITF Florence, United States W35 Hard Piper Charney 6–3, 6–4 Loss 1–2 Aug 2026 ITF Southaven, United States W35 Hard Dana Guzmán 2–6, 4–6

Doubles: 5 (5 titles) LegendW25/35 tournaments (3–0)W15 tournaments (2–0)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScore Win 1–0 May 2025 ITF Monastir, Tunisia W15 Hard Kristina Penickova Arina Arifullina Inês Murta 6–4, 6–4 Win 2–0 May 2025 ITF Monastir, Tunisia (2) W15 Hard Kristina Penickova Lamis Alhussein Abdel Aziz Kateryna Lazarenko 7–5, 6–2 Win 3–0 May 2026 ITF Boca Raton, United States W35 Clay Capucine Jauffret Dasha Ivanova Alexandra Vagramov 6–1, 6–2 Win 4–0 Jul 2026 ITF Santa Fe, United States W35 Hard Kristina Penickova Carolina Gómez Celine Simunyu 6–3, 6–3 Win 5–0 Jul 2026 ITF Florence, United States W35 Hard Kristina Penickova Alyssa Ahn Krisha Mahendran 6–3, 6–3

Junior Grand Slam tournament finals

Doubles: 1 (title)