‘Let’s go Coco’: US Open crowd roars approval as Gauff reaches quarter-finals

• Teenager beat Zhang Shuai in thrilling contest 7-5, 7-5
• American will play Caroline Garcia for place in semi-final

Coco Gauff used her superior speed to overcome a second-set deficit and clinch a thrilling 7-5, 7-5 win over China's Zhang Shuai to reach the quarter-finals of the US Open for the first time.

In a battle between the youngest player left in the draw, the 18-year-old Gauff, and the oldest, the 33-year-old Zhang, it was the Chinese player who looked sharper at the outset, breaking for a 2-0 lead in the first set. But 12th seed Gauff battled back and fired a backhand winner to claim the first set and electrify her home crowd.