(CNN) -- Andy Murray continued where he left off from his Olympic gold medal heroics in London with an opening victory over Flavio Cipolla Wednesday at the Masters 1000 tournament in Toronto.
Murray beat Roger Federer in the men's singles final at Wimbledon Sunday and also won silver in the mixed doubles, but showed no signs of tiredness with a 6-1 6-3 victory over his Italian opponent.
It gave him victory after just one hour and 21 minutes, the only worrying moment coming as Murray needed treatment on court for a knee problem.
He will play home hope and 16th seed Milos Raonic for a place in the quarterfinals.
Swiss maestro Federer pulled out of the hard court tournament to elevate Murray to second seed behind Novak Djokovic in Canada. Rafael Nadal of Spain is also absent.
Djokovic was playing his second round opener later Wednesday against young Australian Bernard Tomic.
Serbia's Djokovic was beaten by Murray in the semifinals of the Olympics and lost the playoff for bronze to Juan Martin Del Potro of Argentina.
Sixth seed Del Potro went down 6-4 7-6 to Radek Stepanek of the Czech Republic to make an early exit to the ATP event, while Jo-Wilfried Tsonga of France also crashed out.
Third seed Tsonga, an Olympic doubles silver medalist in London, was beaten 6-4 7-6 by fellow Frenchman Jeremy Chardy.
It took 47th-ranked Chardy just 88 minutes to dispatch Tsonga, who could not convert on three break points.
Another Frenchman, 14th seed Richard Gasquet beat Kazakhstan's Mikhail Kukushkin 6-3 7-5 in an earlier match.