Lulu Sun

Lulu Sun (Chinese: 孙璐璐; pinyin: Sūn Lùlù, née Lulu Radovcic; born 14 April 2001) is a New Zealand professional tennis player. She has a career-high singles ranking of world No. 39 by the WTA, achieved on 9 September 2024 and a best doubles ranking of No. 190, reached on 24 February 2025.

Sun was born Lulu Radovcic (Croatian: Radovčić) in Te Anau, New Zealand, to a Chinese mother and a Croatian father. Sun briefly lived in Shanghai thereafter. From the age of five she was raised in Geneva, Switzerland, where she completed her school education while still visiting New Zealand to visit family.

She attended college in the United States at the University of Texas at Austin, graduating with a bachelor's degree in international relations and global studies in 2022 and completing her degree in just 3 years.

Sun speaks English, French, and Mandarin Chinese fluently; she expressed interest in learning Korean and Japanese.

She has an older sister, Phenomena Sun (born 1998), who played in professional tournaments until 2016.

As a teenager, Sun entered a number of ITF Women's Circuit events, playing as Lulu Radovcic and later changed her last name to Sun, her mother's maiden name.^{[citation needed]}

Sun represented Switzerland as a junior, finishing runner-up with Violet Apisah in the 2018 Australian Open girls' doubles. She also played under the New Zealand flag at junior Wimbledon that year, losing in the second round in singles and the first round in doubles.

Before turning professional, Sun played one season of college tennis for the Texas Longhorns in 2020–21. She went 15–1 on singles court three and 6–1 on court two. In the final of the 2021 NCAA tournament, Sun won the championship-clinching match for the Longhorns to beat Pepperdine 4–3. Sun partnered Kylie Collins in the team's top doubles spot, going 22–4 in dual matches, and they reached the final of the NCAA doubles tournament but fell to North Carolina's Makenna Jones and Elizabeth Scotty.