British teenager Emma Raducanu delivered another impressive display which belied her youth and inexperience as she swept aside China's Zhang Shuai to reach the US Open third round.
Raducanu won 6-2 6-4 against 32-year-old Zhang, who is ranked 101 places higher than the 18-year-old.
Superior in every department, Raducanu needed one hour and 21 minutes to win.
Next she will face Spain's Sara Sorribes-Tormo on Saturday for a place in the fourth round.
After her stunning run to the Wimbledon last 16 as a wildcard, Raducanu is backing up that breakout display in New York.