Coco Gauff produced a fine fightback to reach the US Open fourth round and keep alive her hopes of winning a first Grand Slam title.

Her shots were off. She was struggling to hold serve. She dropped a set. All the while, Gauff was talking to her coaches, Brad Gilbert and Pere Riba. Talking to herself. Slapping her thigh or putting her palm to her face.

And when the No 6 seed needed to lift her game, when she needed to get headed in the right direction before it was too late, she did just that. Did she ever. Asking for more noise from the partisan fans at Arthur Ashe Stadium – and, naturally, getting it – Gauff grabbed the last 10 games for a 3-6, 6-3, 6-0 victory over No 32 Elise Mertens to reach the fourth round at Flushing Meadows.

Miami Heat superstar Jimmy Butler was in the crowd alongside both Justin and Hailey Bieber. The A-listers were caught on camera celebrating Gauff’s brilliant comeback.