The 38-year-old Frenchman accomplished the milestone at the ASB Classic in Auckland on Saturday, breaking Ken Rosewall's record from 1977. Monfils defeated Zizou Bergs 6-3, 6-4 in the ATP 250 hard-court final, winning his first title since the 2023 BNP Paribas Nordic Open.

Monfils achieved the feat at 38 years and four months while Federer won his last tournament at 38 years and two months when he won a title at Basel in 2019

Gael Monfils claimed his 13th ATP title in Auckland. The Frenchman played in his 35th ATP final and ousted Belgium's Zizou Bergs 6-3, 6-4 in an hour and 37 minutes, lifting a trophy and writing history books.