Coco Gauff through at the US Open with little fuss

The American dropped just four games in a 6-3 6-1 win over Magdalena Frech.

Coco Gauff hits a backhand. Pic: Kirsty Wigglesworth/AP

Coco Gauff found some calm at the US Open as she eased into the fourth round.

The third seed was in tears on Arthur Ashe Stadium on Thursday night as she again struggled with her serve before battling to victory over Donna Vekic.