Quick Facts
Biography
Lulu Sun (formerly known as Lulu Radovcic; born 14 April 2001) is a New Zealand and Swiss tennis player. She has a career-high singles ranking by the WTA of world No. 123, achieved on 24 June 2024, and a best doubles ranking of No. 219, reached on 6 May 2024.
Early life
Sun was born in New Zealand, before moving to Switzerland where she completed her school education. She attended college in the United States at the University of Texas in Austin, graduating in 2022 with a BA in Political Science.
Career
Juniors
Sun represented Switzerland as a junior, finishing runner-up with Violet Apisah in the 2018 Australian Open girls' doubles, but 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.
2022: Professional and WTA debuts
Before turning pro in 2022, Sun played college tennis at the University of Texas at Austin. In 2021, she competed in the NCAA DI women’s tennis championship for UT Austin, clinching the match and winning the third ever NCAA championship.
In May 2022, she won her first big ITF title at the Saint-Gaudens Open, partnering Fernanda Contreras in doubles. She made her WTA Tour main-draw debut at the Morocco Open just two days later, where she received a wildcard into the singles draw.
2024: Major, Masters debuts and first win, top 125
Sun made her Major debut at the 2024 Australian Open after qualifying. On her WTA 1000 debut, she recorded her first win at that level at the 2024 Dubai Tennis Championships, as a wildcard, following the retirement of Paula Badosa. As a result, she moved to a new career-high singles ranking of No. 151, on 26 February 2024.
In April, Sun played under the New Zealand flag for the first time as part of the team for the 2024 Billie Jean King Cup. In May, Sun won the singles and doubles titles at the W100 Bonita Springs tournament in Florida. She reached the top 125 on 17 June 2024.
She qualified for the 2024 Wimbledon Championships making her debut at this Major.
Grand Slam performance timelines
| W | F | SF | QF | #R | RR | Q# | P# | DNQ | A | Z# | PO | G | S | B | NMS | NTI | P | NH |
Singles
| Tournament | 2022 | 2023 | 2024 | SR | W–L | Win% |
|---|---|---|---|---|---|---|
| Australian Open | A | A | 1R | 0 / 0 | 0–1 | 0% |
| French Open | A | A | Q2 | 0 / 0 | 0–0 | – |
| Wimbledon | Q3 | A | 2R | 0 / 0 | 1–0 | 100% |
| US Open | A | A | 0 / 0 | 0–0 | – | |
| Win–loss | 0–0 | 0–0 | 1–1 | 0 / 0 | 1–1 | 50% |
ITF Circuit finals
Singles: 12 (7 titles, 5 runners-up)
| Finals by surface |
|---|
| Legend |
| W100 tournaments (1–0) |
| W80 tournaments (1–0) |
| W60 tournaments (0–1) |
| W40/50 tournaments (1–0) |
| W25 tournaments (1–2) |
| W15 tournaments (3–2) |
| Finals by surface |
| Hard (6–4) |
| Clay (1–1) |
| W100 tournaments (1–0) |
| W80 tournaments (1–0) |
| W60 tournaments (0–1) |
| W40/50 tournaments (1–0) |
| W25 tournaments (1–2) |
| W15 tournaments (3–2) |
| Hard (6–4) |
| Clay (1–1) |
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | Oct 2017 | ITF Nonthaburi, Thailand | W15 | Hard | Choi Ji-hee | 2–6, 3–6 | |
| Win | Feb 2019 | ITF Port Pirie, Australia | W15 | Hard | Jennifer Elie | 6–2, 6–3 | |
| Win | Feb 2019 | ITF Perth, Australia | W15 | Hard | Jennifer Elie | 7–6, 6–3 | |
| Loss | Nov 2020 | ITF Sharm El Sheikh, Egypt | W15 | Hard | Joanna Garland | 5–7, 3–6 | |
| Win | Dec 2020 | ITF Monastir, Tunisia | W15 | Hard | Carole Monnet | 6–0, 2–6, 6–2 | |
| Loss | Jun 2021 | ITF Palma del Río, Spain | W25 | Hard | Rebeka Masarova | 3–6, 6–1, 6–7 | |
| Win | Jul 2021 | ITF Lisbon, Portugal | W25 | Hard | Ellen Perez | 6–4, 6–4 | |
| Loss | Jan 2023 | ITF Boca Raton, United States | W25 | Clay | Renata Zarazúa | 2–6, 5–7 | |
| Win | Aug 2023 | Aberto da República, Brazil | W80 | Hard | Léolia Jeanjean | 6–4, 4–6, 6–2 | |
| Loss | Oct 2023 | Rancho Santa Fe Open, United States | W60 | Hard | Yuliia Starodubtseva | 5–7, 3–6 | |
| Win | Feb 2024 | ITF Roehampton, United Kingdom | W50 | Hard (i) | Heather Watson | 7–5, 7–5 | |
| Win | May 2024 | Bonita Springs Championship, United States | W100 | Clay | Maya Joint | 6–1, 6–3 |
Doubles: 10 (4 titles, 6 runners–up)
| Finals by surface |
|---|
| Legend |
| W100 tournaments (1–0) |
| W60/75 tournaments (2–1) |
| W40/50 tournaments (1–0) |
| W25 tournaments (0–3) |
| W15 tournaments (0–2) |
| Finals by surface |
| Hard (2–5) |
| Clay (2–1) |
| W100 tournaments (1–0) |
| W60/75 tournaments (2–1) |
| W40/50 tournaments (1–0) |
| W25 tournaments (0–3) |
| W15 tournaments (0–2) |
| Hard (2–5) |
| Clay (2–1) |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | Jan 2019 | Playford International, Australia | W25 | Hard | Amber Marshall | Giulia Gatto-Monticone Anastasia Grymalska | 2–6, 3–6 | |
| Loss | Nov 2020 | ITF Sharm El Sheikh, Egypt | W15 | Hard | Valentina Ryser | Ksenia Laskutova Daria Mishina | 6–7, 7–6, [10–12] | |
| Loss | Nov 2020 | ITF Sharm El Sheikh, Egypt | W15 | Hard | Valentina Ryser | Elina Avanesyan Iryna Shymanovich | 4–6, 1–6 | |
| Loss | Jun 2021 | ITF Palma del Río, Spain | W25 | Clay | Himari Sato | Eri Hozumi Valeria Savinykh | 6–7, 3–6 | |
| Win | May 2022 | Open Saint-Gaudens, France | W60 | Clay | Fernanda Contreras Gómez | Valentini Grammatikopoulou Anastasia Tikhonova | 7–5, 6–2 | |
| Win | Feb 2023 | Georgia's Rome Open, United States | W60 | Hard (i) | Fanny Stollár | Mana Ayukawa Gabriela Knutson | 6–3, 6–0 | |
| Loss | Jul 2023 | ITF Corroios, Portugal | W25 | Hard | Sofia Costoulas | Talia Gibson Petra Hule | 3–6, 6–3, [6–10] | |
| Win | Feb 2024 | Trnava Indoor, Slovakia | W50 | Hard (i) | Moyuka Uchijima | Weronika Falkowska Fanny Stollár | 6–4, 7–6 | |
| Loss | Mar 2024 | Říčany Open, Czech Republic | W75 | Hard (i) | Fanny Stollár | Gabriela Knutson Tereza Valentová | 4–6, 6–3, [4–10] | |
| Win | May 2024 | Bonita Springs Championship, United States | W100 | Clay | Fanny Stollár | Valentini Grammatikopoulou Valeriya Strakhova | 6–4, 7–6 |
Junior Grand Slam finals
Doubles: 1 (runner-up)
| Result | Year | Tournament | Surface | Partner | Opponent | Score |
|---|---|---|---|---|---|---|
| Loss | 2018 | Australian Open | Hard | Violet Apisah | Liang En-shuo Wang Xinyu | 6–7, 6–4, [5–10] |