Juniors Grand Slam results - Singles: • Australian Open: – • French Open: F (2017) • Wimbledon:
W (2017) • US Open: 2R (2013, 2016) Grand Slam results - Doubles: • Australian Open: – • French Open: QF (2017) • Wimbledon:
W (2016) • US Open: QF (2016) Liu won the
Wimbledon junior doubles tournament in 2016 with fellow American
Usue Maitane Arconada, defeating
Mariam Bolkvadze and
Caty McNally in the final, in straight sets. The following year, after losing the
French Open junior final to
Whitney Osuigwe, she came back to win the
Wimbledon singles title against
Ann Li, making her the first American girl to win the event since
Chanda Rubin in 1992. With this Grand Slam success, Liu rose to world No. 1 in the girls' junior rankings.
2015: First professional title, mixed doubles major debut She won her first professional title in March 2015, at an Orlando clay-court tournament on the
ITF Women's Circuit. At age 14, Liu was the youngest tennis player to win a professional tournament since
Anna Kournikova in 1996. On her debut at the
US Open, Liu was granted a wildcard into the qualifying tournament. She beat
Verónica Cepede Royg and ninth seed
Jana Čepelová in her first two matches, before losing to the 26th seed,
Alexandra Panova, in the final round. Liu, alongside
Taylor Fritz, was also given a wildcard for the
mixed-doubles draw; they were defeated in the first round by the fourth seeds and eventual champions,
Martina Hingis and
Leander Paes.
2017–2021: First major match win, top 100 After securing two ITF tournament wins in 2017, Liu was granted again a wildcard into the qualifying for the
US Open. She defeated all three of her opponents in the qualifying tournament, earning her a spot in the singles main draw of a Grand Slam championship for the first time. There, she was defeated in the first round, in straight sets by
Duan Yingying. Liu qualified for the main-draw at the
2018 Wimbledon Championships and won her first match at a major by defeating
Ana Konjuh, before losing in the second round to 11th seed eventual champion,
Angelique Kerber, in three sets. Liu was the only player in the tournament to win a set against Kerber. In October 2019, Liu won her fourth title on the ITF Circuit at a $25k tournament in
Florence, South Carolina. After finishing as a runner-up in two tournaments in 2020 and another two in 2021, Liu won consecutive tournaments in May 2021 at the $60k event in
Charlottesville, Virginia and the $100k
Charleston Pro Tennis. As a result, she entered the top 100 on 23 August 2021.
2022: Maiden Tour final, first WTA 125 title In May, Liu won her first
WTA 125 title at the
Trophee Lagardère in Paris, defeating
Beatriz Haddad Maia in the final. The following week she reached her maiden WTA Tour final in
Rabat, losing to
Martina Trevisan. As a result, she reached the top 75 on 23 May 2022. She made it through to the semifinals at the
Jasmin Open in
Monastir, Tunisia, defeating seventh seed
Kateřina Siniaková in the second round and top seed
Ons Jabeur in the quarterfinals for her first win over a top-10 ranked player. Her run was ended in the last four by fifth seed and eventual champion
Elise Mertens.
2023: WTA 1000 third round, Chicago Challenger final At the
Australian Open, Liu overcame
Madison Brengle to reach the second round where she lost to 12th seed
Belinda Bencic. She reached the third round of a WTA 1000 for the first time at the
2 Miami Open defeating Kateřina Siniaková by retirement and lucky loser
Julia Grabher before she lost to 25th seed Martina Trevisan. At the
Italian Open, Liu got the better of wildcard
Camilla Rosatello in a first round match that went to three sets, before losing to 32nd seed
Marta Kostyuk. She reached the second round at the
French Open thanks to a win over qualifier
Ylena In-Albon, but lost to top seed and eventual champion
Iga Świątek. Liu defeated alternate
Oana Gavrilă and
Irina Khromacheva at the
Swedish Open to set up a quarterfinal meeting with
Louisa Chirico which she lost in three sets. The following week at the
Hungarian Open, gained revenge by defeating Louisa Chirico in the first round, before recording wims over fourth seed
Yulia Putintseva and eighth seed
Anna Karolína Schmiedlová to reach the semifinals where she lost to
Kateryna Baindl. Wins over
Irina Fetecău,
Storm Hunter, sixth seed
Rebeka Masarova and
Cristina Bucșa, saw Liu make it through to the final at the
Chicago Challenger where she lost to
Viktoriya Tomova. She reached the quarterfinals at the
Korea Open, defeating qualifier
Ku Yeon-woo before losing to 10th seed
Daria Kasatkina by retiring. She also qualified for the
2024 Charleston Open, but lost her main-draw match to wildcard
Shelby Rogers. In May 2024, Liu won the
ITF tournament in
Saint-Gaudens, France, defeating
Séléna Janicijevic in the final. Later that month she lost in the first round of qualifying for the
French Open to
Veronika Erjavec in three sets. Liu took the rest of the 2024 season off for a mental health break. Seven months after her previous match, Liu returned to competitive tennis at the ITF W75 event in
Nonthaburi, Thailand, in January 2025, reaching the semifinals before withdrawing due to a neck problem. Liu also qualified for the
Miami Open, but again was eliminated in the first round, this time by
Linda Fruhvirtová. Liu made it through
qualifying at the
US Open, before losing to
Cristina Bucșa in the first round. In October 2025 at the
Guangzhou Open, Liu qualified for the main-draw and defeated fourth seed
Alexandra Eala,
Anna Bondár and
Ella Seidel to reach her first WTA semifinal since July 2023. She lost in the last four to
Lulu Sun. ==Performance timelines==