Diane Parry

- Singles:

• Australian Open: 1R (2018)
• French Open: 2R (2019)
• Wimbledon: SF (2019)
• US Open: 2R (2018)

- Doubles:

• Australian Open: 1R (2018)
• French Open: SF (2019)
• Wimbledon: QF (2018)
• US Open: QF (2019)

Parry has a career-high ITF junior combined ranking of world No. 1, attained on 21 October 2019. She was designated ITF Junior World Champion for 2019.

She made her WTA Tour main-draw debut at the French Open thanks to a wildcard, partnering Giulia Morlet; they were defeated by the 13th-seeded pair of Kiki Bertens and Johanna Larsson, in two sets in the first round.

Parry won her first ITF Circuit tournament in Hammamet, Tunisia, partnering Yasmine Mansouri.^[]

She made her Grand Slam singles debut at the 2018 French Open, entering the qualifying event as a wildcard, where she upset No. 5 seed, Jana Fett, in the first round before losing to Rebecca Šramková in the second.

Parry made her Grand Slam singles main-draw debut at the 2019 French Open as a wildcard, losing in the second round to No. 20 seed Elise Mertens, after having won against Vera Lapko in the first. Later that year, she also made her US Open debut as a wildcard, losing in the first round against Kristýna Plíšková.^[]

In 2020, Parry won her first ITF Circuit singles title in Antalya, Turkey against Berfu Cengiz in the final.^[]

In 2021, Parry won three additional ITF tournaments, in Périgueux, France, Turin, Italy, and Seville, Spain, bringing her perfect record to 4–0 in ITF Circuit finals.^[]

She reached her first final on the WTA Challenger Tour at the Argentine Open, losing 3–6, 3–6 to Anna Bondar. Two weeks later, she won her first WTA 125 tournament at the Montevideo Open, winning the final 6–3, 6–2 against Panna Udvardy.

Parry made the second round at the French Open defeating defending champion and world No. 2, Barbora Krejčíková, her first career match against a top-10 player and a top-50 player. Next, she defeated Camila Osorio to reach the third round of a Grand Slam tournament for the first time in her career. She lost to Sloane Stephens in the third round.

Playing at the Mérida Open with Caty McNally, Parry won her maiden career doubles title, beating Wang Xinyu and Wu Fang-hsien in the final.

Partnering with Anna Bondár, she won the doubles title at the Lausanne Open, defeating Amina Anshba and Anastasia Dețiuc in the final.

Parry was runner-up in the singles at the Montevideo Open, losing the final to Renata Zarazúa in three sets.

Parry reached the third round of the Australian Open for the first time at this major, defeating 30th seed Wang Xinyu and Kamilla Rakhimova, before losing to Mirra Andreeva.

On her debut at the WTA 1000 level, at the Indian Wells Open, she recorded her firs wins at this level, reaching the fourth round by defeating Martina Trevisan, 29th seed Leylah Fernandez and Anna Blinkova. Her run was ended by ninth seed Maria Sakkari

At the next WTA 1000, the Miami Open, Parry reached the second round defeating Jaqueline Cristian, before losing to 11th seed Beatriz Haddad Maia in three sets. As result, she reached the top 50, a week later on 8 April.^[]

She reached her first grass-court semifinal at the Nottingham Open, losing to sixth seed Karolina Plíšková, having overcome Cristina Bucșa, Daria Saville and Kimberly Birrell on her way to the last four.

As top seed, Parry made it through to the quarterfinals at the Swedish Open with wins over wildcard Caijsa Hennemann and Darja Semenistaja, before losing to seventh seed Martina Trevisan.

She defeated qualifier Olivia Gadecki, Jil Teichmann and Chloe Paquet to reach the semifinals at the Palermo Open, where she lost to top seed Zheng Qinwen.

Partnering Harriet Dart, Parry reached the round of 16 in the doubles at the US Open after a three-set win over Olympic champions and sixth seeds, Sara Errani and Jasmine Paolini, in the second round. They lost to 10th seeds Chan Hao-ching and Veronika Kudermetova.

Seeded seventh, Parry made her third WTA semifinal of the year at the Japan Women's Open, recording wins over Erika Andreeva, Greet Minnen and Clara Tauson, before losing to eventual champion Suzan Lamens.