Kimberly Birrell claimed her first WTA Tour singles title on September 27, 2026, by defeating fellow Australian Maya Joint in straight sets, marking the first all-Australian singles final on the WTA Tour since 2017. After previously losing in two finals, the 28-year-old Birrell reversed her fortunes in this match.

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Initially, Joint took a quick lead by breaking Birrell to go ahead 2-0. However, Birrell quickly regained control, breaking Joint twice to win the first set 6-4.

In the second set, both players exchanged breaks early, but Birrell pulled ahead with another break and ultimately sealed the match with a final game break, winning 6-4, 6-2 in 1 hour and 23 minutes. Throughout the match, Joint struggled with her consistency, accumulating 41 unforced errors against 12 winners. In contrast, Birrell recorded 10 winners and 21 unforced errors, successfully converting six of her ten break point chances, while Joint converted three of six.

With this victory, Birrell is set to make her debut in the Top 50 of the WTA PIF Rankings, currently holding a ranking of No. 60.