Thea Frodin

Frodin was born and raised in Southern California region, United States and lived in Woodland Hills, Los Angeles. She started taking tennis lessons in her early childhood.^[3]

In December 2023, Frodin was a runner-up at the prestigious Orange Bowl, in girls' 16s category.^[4] She made her debut at a major jr. at the 2024 French Open.^[5]

Frodin reached the second round of the girls' singles at the 2025 Australian Open before losing to Emerson Jones.^[6] At the 2025 Wimbledon Championships she lost in the first round to Mimi Xu.^[7] In the girls' doubles she reached the final alongside compatriot Julieta Pareja where they lost to Kristina Penickova and Vendula Valdmannova.^[8] The following month, she paired with Kristina Penickova to win the Girls' Doubles title at the USTA U18s National Championships in San Diego to earn a wildcard spot in the main draw at the 2025 US Open.^[9] They were drawn against compatriots Reese Brantmeier and Alanis Hamilton in the first round.^[10]

In January 2026, Frodin had her best performance in girls' singles at a major, reaching the semifinals at the 2026 Australian Open, where she lost to Ekaterina Tupitsyna.^[11]

Her father, Mathias, is Swedish. Her mother was born in France and grew up in Gabon. She also has dual citizenship with Sweden.^[12][13]

She portrayed some tennis scenes of a young Serena Williams in the 2021 sports biographical film King Richard, starring Will Smith.^[14][15]