Coco Gauff advances to US Open quarterfinals for first time with straight

Gauff and her fans were reacting excitedly to quite a point

one in which the 18-year-old Floridian raced to her right

a backhand that drew a netted volley from Zhang.

a backhand that drew a netted volley from Zhang.

Gauff was a quarterfinalist at Flushing Meadows 

Gauff, the French Open runner-up in June

this far at the US Open since Melanie Oudin was 17 in 2009