2014–2016: The beginnings

Fourlis made her ITF Women's Circuit debut in Glen Iris in March 2014. Her first win came in October 2014 in Cairns when her opponent Carolin Daniels retired while down 0–3.

In March 2015, she qualified for the Melbourne ITF event and made the semifinal. She played two more ITF tournaments in Croatia for the year.

In 2016, Fourlis commenced the year at the Perth $25k event, where from qualifying she won eight matches en route to her first title.^[1] She played a number of events across Australia and Great Britain, with limited success. She ended the 2016 season with a ranking of 427.

2017: Grand Slam debut

Fourlis was given a wildcard into the Hobart International where she lost to Kirsten Flipkens in the opening round. She made her Grand Slam debut at the Australian Open, after winning the Wildcard Playoff. She defeated Anna Tatishvili before losing to Svetlana Kuznetsova in the second round. In February and March, Fourlis competed on the Australian ITF Circuit, reaching the quarterfinals in Launceston. In May, she competed in Wiesbaden, before winning an Australian wildcard playoff^[2] into the French Open, losing to former world No. 1, Caroline Wozniacki, in three sets. After the French Open, Fourlis took three months off to focus on her Year 12 studies, returning to the Australian ITF Circuit in September,^[3] where she reached the quarterfinals in both Penrith and Brisbane. In December, Fourlis won the Under-18 Australian Championships and received a main-draw wildcard to the 2018 Australian Open.^[4]

2018: Top 200 debut

Fourlis was given a wildcard into the Hobart International where she defeated Nina Stojanović,^[5] before losing to Heather Watson in the second round. At the Australian Open, she received a wildcard but lost to Olivia Rogowska in the first round.

In April, Fourlis won her second and third ITF titles.^[6] In June, her ranking peaked inside the world's top 200.^[7] She ended 2018 with a singles ranking of 202.

2019–2020

In January 2019, Fourlis lost in the first round of qualifying for the Australian Open. She spent the next months of 2019 on the ITF Circuit with her best performance being a semifinal result in Rome in May and Barcelona in June. In July 2019, she qualified for the WTA Tour events in Bucharest and Palermo. Fourlis reached the final round of the US Open qualifying. She ended 2019 with a singles ranking of 248.

Following a first-round loss in Perth in March 2020, she underwent shoulder surgery.

2021: Return from surgery

In August 2021, Fourlis won her fourth ITF tournament. It was her first, after returning to tour in June 2021, and her first singles title in three years.^[8][9] Fourlis lost in the first round of the US Open qualifying.

2022: Australian Open mixed doubles finalist, top 150 debut

In January, Fourlis reached the second round of the Australian Open qualifying.^[10] At the same tournament, she reached the final in mixed doubles as a wildcard pair, partnering Jason Kubler, which they lost to fifth seeds Kristina Mladenovic and Ivan Dodig.

On 27 June, she reached top 150 before the Wimbledon Championships where she qualified, making her main-draw debut at this major.

2023: Third Australian Open wildcard

At the German Open, she qualified for the main draw^[11] and defeated fellow qualifier Wang Xinyu by retirement.

Singles

Current through the 2023 US Open.

Mixed doubles

Mixed doubles: 1 (runner-up)

Result	Year	Tournament	Surface	Partner	Opponents	Score
Loss	2022	Australian Open	Hard	Jason Kubler	Kristina Mladenovic Ivan Dodig	3–6, 4–6

Singles: 10 (8 titles, 2 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Feb 2016	ITF Perth, Australia	15,000	Hard	Jang Su-jeong	6–4, 2–6, 7–6(7–1)
Win	2–0	Apr 2018	Clay Court International, Australia	15,000	Clay	Ellen Perez	6–3, 6–2
Win	3–0	Apr 2018	ITF Pula, Italy	15,000	Clay	Anastasia Grymalska	6–4, 4–6, 6–0
Win	4–0	Aug 2021	ITF Ourense, Spain	25,000	Clay	Fanny Stollár	7–6(7–3), 6–3
Win	5–0	Mar 2022	Bendigo International, Australia	25,000	Hard	Olivia Gadecki	6–3, 0–0 ret.
Win	6–0	Jun 2022	Brașov Open, Romania	60,000	Clay	İpek Öz	7–6(7–0), 6–2
Win	7–0	Jun 2022	ITF Madrid, Spain	25,000	Hard	Guiomar Maristany	6–4, 6–2
Loss	7–1	Jul 2022	ITF Horb, Germany	25,000	Clay	Ekaterina Makarova	1–6, 0–6
Win	8–1	Feb 2023	Burnie International, Australia	25,000	Hard	Olivia Gadecki	6–4, 6–3
Loss	8–2	May 2023	Wiesbaden Open, Germany	100,000	Clay	Elina Avanesyan	2–6, 0–6

Doubles: 15 (6 titles, 10 runner–ups)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	May 2018	ITF Caserta, Italy	25,000	Clay	Ellen Perez	Chen Pei-hsuan Wu Fang-hsien	6–7(6), 3–6
Win	1–1	Mar 2019	Clay Court International, Australia	25,000	Clay	Alison Bai	Naiktha Bains Tereza Mihalíková	6–2, 6–2
Loss	1–2	Apr 2019	Chiasso Open, Switzerland	25,000	Clay	Sharon Fichman	Cristina Bucșa Marta Kostyuk	1–6, 6–3, [7–10]
Loss	1–3	May 2019	Wiesbaden Open, Germany	60,000	Clay	Kathinka von Deichmann	Anna Blinkova Yanina Wickmayer	3–6, 6–4, [3–10]
Loss	1–4	Sep 2019	Darwin International, Australia	60,000	Hard	Alison Bai	Destanee Aiava Lizette Cabrera	4–6, 6–2, [3–10]
Loss	1–5	Oct 2019	Tennis Classic of Macon, United States	80,000	Hard	Valentini Grammatikopoulou	Usue Maitane Arconada Caroline Dolehide	7–6(2), 2–6, [8–10]
Win	2–5	Jan 2020	Canberra International[lower-alpha 1], Australia	25,000	Hard	Alison Bai	Anna Bondár Pemra Özgen	5–7, 6–4, [10–8]
Win	3–5	Feb 2020	Launceston International, Australia	25,000	Hard	Alison Bai	Alicia Smith Abigail Tere-Apisah	7–6(4), 6–3
Loss	3–6	Feb 2020	ITF Perth, Australia	25,000	Hard	Erin Routliffe	Kanako Morisaki Erika Sema	5–7, 4–6
Loss	3–7	Aug 2021	Reinert Open, Germany	60,000	Clay	Mirjam Björklund	Anna Danilina Valeriya Strakhova	6–4, 5–7, [4–10]
Loss	3–8	Feb 2022	ITF Canberra Pro 2, Australia	25,000	Hard	Alison Bai	Asia Muhammad Arina Rodionova	3–6, 6–3, [6–10]
Win	4-8	Mar 2022	ITF Bendigo, Australia	25,000	Hard	Ellen Perez	Alana Parnaby Gabriella Da Silva Fick	6–1,6–1
Loss	4–9	Feb 2022	ITF Canberra Pro 1, Australia	25,000	Hard	Alison Bai	Asia Muhammad Arina Rodionova	6–7(2), 6–7(5)
Loss	4–10	Jul 2022	ITF Horb, Germany	25,000	Clay	Alana Parnaby	Ekaterina Makarova Ekaterina Reyngold	6–2, 4–6, [8–10]
Win	5–10	Oct 2022	ITF Šibenik, Croatia	25,000	Clay	Weronika Falkowska	Eleni Christofi Christina Rosca	6–4, 6–2
Win	6–10	May 2023	Wiesbaden Open, Germany	100,000	Clay	Olivia Gadecki	Emily Appleton Julia Lohoff	6–1, 6–4