NEW YORK (Reuters) - Novak Djokovic took a while to warm up against Austrian Andreas Haider-Maurer but shifted into gear to close out the first set and then raced to a 6-4 6-1 6-2 win that closed Wednesday's play of the U.S. Open.
World number one Djokovic, who lost only three games in his opening-round victory, led 5-4 in an indifferent first set that went with serve before suddenly snapping into focus to break the Austrian to love.
Flicking winners off his forehand and burying backhands deep into corners, the Serb dropped only three more games as he sailed to victory and a place in the third round.
The reigning Australian and Wimbledon champion registered 27 winners and did not face a single break point in his demolition of 28-year-old Haider-Maurer, a winner of nine career Challenger titles but none on the ATP World Tour.
Djokovic next plays Italy's Andreas Seppi, a 3-6 6-3 7-6(3) 6-1 winner against Russian Teymuraz Gabashvili.
(Reporting by Larry Fine; Editing by John O'Brien)