BELGRADE, Serbia (AP) -- Top-ranked Novak Djokovic defeated Vasek Pospisil in straight sets Friday to give Serbia a 1-0 lead over Canada in the Davis Cup semifinals.
Djokovic beat Pospisil 6-2, 6-0, 6-4 on an indoor clay court at Belgrade Arena and did not face a single break point.
Djokovic, coming off a four-set loss to Rafael Nadal in the U.S. Open final on Monday, won 12 consecutive games midway through Friday's singles match and had no problem dispatching the 41st-ranked Canadian.
He said he was still recovering from the change of the time zones and jet leg after arriving to the Serbian capital from New York on Wednesday.
''I'm glad the match was short,'' Djokovic said. ''I forced him to make mistakes. ... I find additional inspiration while playing for my country.''
Pospisil said Djokovic played ''an amazing'' match and gave him no chance.
''There is no excuse,'' Pospisil said. ''He is the No. 1 player in the world for a reason.''
Canada has never made it this far in the Davis Cup, while Serbia won the event in 2010.
Janko Tipsarevic will face Canada's top player, Milos Raonic, in the second singles match.
The winner of the best-of-five series will face either the Czech Republic or Argentina in the final in November.