Coco Gauff wins teenage battle against Mirra Andreeva to advance in New York

The sixth seed, still only 19, had to come from behind to beat Laura Siegemund in a drama-filled three-setter on Monday, but she had a far more gentle work-out this time on Arthur Ashe.

Coco Gauff beat fellow teenager Mirra Andreeva. Pic: John Minchillo/AP

The original teenage star beat the new kid on the block as Coco Gauff knocked 16-year-old Mirra Andreeva out of the US Open.

Gauff, who burst onto the scene when she beat Venus Williams on her way to the fourth round at Wimbledon aged 15, ousted the Russian rookie 6-3 6-2.