With just 25 minutes on the clock, Mboko had clattered 10 winners to snatch away the opener.
Even in the second set, when Wimbledon 2024 quarter-finalist Sun kept pushing, Mboko saved five break points in a mammoth 14-minute hold for 3-3. She simply wasn’t going to flinch.
Into the tie-break and Mboko excelled as the front runner, crouching to connect with one last crunching backhand on match point to prompt a roaring celebration.
Iconic trio of influences
There is a strong French connection in the Mboko camp.
The teenager crossed paths with former world No.3 Nathalie Tauziat as a junior when the Frenchwoman started working at Tennis Canada. Now Tauziat, a quarter-finalist at Roland-Garros in 1991, has been nurturing this unique talent as coach.
Also, Mboko revealed that major winners Serena Williams and Bianca Andreescu have inspired her rapid rise.