NEW YORK - Novak Djokovic has reached the third round of a grand slam for the 25th consecutive time at the US Open.
Joining him in the last 32 is 2012 winner Andy Murray and Canadian fifth seed Milos Raonic.
World No.1 Djokovic breezed past France's Paul-Henri Mathieu 6-1 6-3 6-0, firing 13 aces and 33 winners as the 2011 champion comfortably remained on course for a fifth successive final appearance.
"It's very windy, but I managed to adjust to the conditions that obviously are not easy for myself and my opponent," said Djokovic, who next meets Sam Querrey of the United States, after his brief 90-minute appearance.
Eighth-seeded Murray brushed aside 27-year-old German qualifier Matthias Bachinger, the world No.235, with a 6-3 6-3 6-4 win.
Murray exhibited none of the physical problems he suffered in the first round when he was cramping, sending down 36 winners past Bachinger, a contemporary from his junior days.
Raonic progressed with a 7-6 (7-4) 5-7 6-4 7-6 (7-3) win over German qualifier Peter Gojowczyk on the back of 26 aces and 64 winners.
The United States only saw three men making the second round — the country's lowest total in the history of the tournament — but 13th seed John Isner and Querrey have made it to the last 32.
Isner, a quarter-finalist in 2011, beat Germany's Jan-Lennard Struff 7-6 (7-5) 6-4 6-2, while Querrey beat Spain's Guillermo Garcia Lopez for the fourth time in four meetings — including last week's Winston Salem warm-up — thanks to a 6-3 6-4 6-4 victory.
Australian 19-year-old Nick Kyrgios, who famously defeated Rafael Nadal at Wimbledon, reached the third round by seeing off Italy's Andreas Seppi 6-4 7-6 (7-2) 6-4.
He will next face Spanish veteran Tommy Robredo, who came back from two sets to love down for the seventh time in seeing off Italy's Simone Bolelli 5-7 6-7 (5-7) 6-4 6-3 6-2.