IT was game, set and match for teenage tennis fan Millie McIlraith as she helped world number one Novak Djokovic to glory in the ATP World Finals.
The 15-year-old Kirby Tennis Club member scooped the once-in-a-lifetime chance to be a ball girl at the competition at London's O2 Arena.
And she was in the thick of the action as Djokovic beat old rival Roger Federer in straight sets to clinch the singles title.
Millie was on court as the Serbian celebrated his win in front of thousands of fans and a TV audience of millions around the world.
The teenager said it was an "exhilarating experience".
She was picked from more than 200 hopefuls to be at the tournament, which featured big-name stars such as Andy Murray and Rafael Nadal from the sport's top ten.
Millie, from Clacton, had to go on an intensive five-day training camp to perfect her ball girl skills.
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