2025: First WTA Tour title, Billie Jean King Cup debut, top 60
Having announced her decision to turn professional, [8] Joint began the 2025 season with a victory over fellow Australian Maddison Inglis at the Brisbane International, [18] before falling to 10th seed Victoria Azarenka in three sets in the second round. [19] The following week, she reached her first WTA semifinal at the Hobart International by defeating Olga Danilović [20] and then fourth seed Magda Linette for her maiden win against a top-50 ranked player, [21] before overcoming wildcard entrant Sofia Kenin in the quarterfinals. [22] She lost in the last four to second seed Elise Mertens. [23] Joint was given a wildcard entry into the main draw at the Australian Open, but lost to seventh seed Jessica Pegula in the first round. [24]
Partnering Taylah Preston, Joint won her first WTA 125 doubles title at the Cancún Open, defeating Aliona Bolsova and Yvonne Cavallé Reimers in the final. [25] Joint qualified for the main draw at the Mérida Open [26] and defeated Julia Grabher. As a result, Joint reached on 3 March 2025 the top 100 in the singles rankings for the first time in her career, becoming only the second teenager in the top 100, at the age of 18 (and second youngest after Mirra Andreeva). [27] [28] [29] She defeated world No. 20 and fifth seed Donna Vekić, conceding only three games, to make it through to her first WTA 500 quarterfinal. [30] [31] [32] Joint won the first set of her last eight encounter against Elina Avanesyan but ultimately lost the match, getting bagelled in the deciding set. [33] Despite the defeat she rose into the top 85 in the rankings. [34]
In March, Joint qualified for the WTA 1000 tournament at Indian Wells. [35] She lost to Sorana Cîrstea in the first round. [36]
Joint made her debut for the Australia Billie Jean King Cup team against Kazakhstan in the 2025 qualifying round held in Brisbane in April, losing to Yulia Putintseva in the opening singles match. [37] She then defeated Yuliana Monroy as Australia beat Colombia, although it was not enough to see them progress to the finals. [38]
After qualifying for the Madrid Open, Joint overcame wildcard entrant Carlota Martínez Círez to secure her first WTA Tour main draw clay-court win. [39] Aged 19 years and five days at the time, the victory also made her the youngest Australian to win a WTA 1000 match, breaking the previous record of 20 years and 330 days set by Ashleigh Barty at the 2017 Miami Open. [40] [41] Joint lost to 11th seed Emma Navarro in the second round. [42] She qualified for the Italian Open, but lost to Emma Raducanu in the first round. [43]
In May at the Morocco Open, Joint won her first WTA Tour title, defeating Jaqueline Cristian in straight sets in the final. [44] She and partner Oksana Kalashnikova won the doubles at the same tournament, overcoming Angelica Moratelli and Camilla Rosatello in the championship match. [44] As a result, Joint rose to new career-high rankings of world No. 53 in singles and No. 107 in doubles on 26 May 2025. [45] That same day, she made her French Open debut but lost to fellow Australian Ajla Tomljanović, in straight sets. [46]
Moving onto the grass-court season at the Eastbourne Open, Joint defeated Ons Jabeur, [47] seventh seed Emma Raducanu, [48] Anna Blinkova [49] and Anastasia Pavlyuchenkova to reach the final, [50] [51] which she won against Alexandra Eala in three sets, saving four match points in the process, to claim her second career singles title. [52] [53] Three days later, she made her main-draw debut at Wimbledon, [54] losing to 19th seed Liudmila Samsonova in the first round. [55]
At the Cincinnati Open in August, Joint defeated Greet Minnen [56] and 18th seed Beatriz Haddad Maia [57] to reach the third round, where her run was ended by 12th seed Ekaterina Alexandrova in straight sets. [58] She recorded a straight sets win over qualifier Victoria Jiménez Kasintseva to make it into the second round at the US Open, [59] at which point she lost to eighth seed Amanda Anisimova. [60]
In September, Joint defeated qualifier Linda Fruhvirtová, [61] seventh seed Sofia Kenin [62] and third seed Clara Tauson to reach the semifinals at the Korea Open. [63] She lost in the last four to top seed Iga Świątek. [64] Partnering Caty McNally, she was runner-up in the doubles at the tournament, losing to Barbora Krejčíková and Kateřina Siniaková in the final. [65] The following week at the China Open, Joint overcame qualifier Victoria Jiménez Kasintseva [66] and 17th seed Diana Shnaider [67] to make it into the third round, where she lost to Sonay Kartal. [68]
Seeded fifth at the Hong Kong Open in October, Joint defeated Anastasija Sevastova, [69] Viktória Morvayová [70] and Himeno Sakatsume [71] to reach the semifinals, at which point she lost to Cristina Bucșa. [72]
Australia 
