Toronto:Swiss world number one Roger Federer suffered a shock defeat in his first match since losing the Wimbledon final as he went down 2-6, 7-5, 6-4 to Gilles Simon of France on Wednesday.
Federer was defeated for the second time in an opening match this season at the 2.6 million-dollar ATP Masters Series hardcourt tournament in Toronto. He also lost to Andy Roddick in the Dubai first round in early March.
Federer, who had a first-round bye, was beaten in this month's classic Wimbledon final by Rafael Nadal, who went through into the third round on Wednesday after a day delayed six hours by rain.
Simon was fresh off winning the Indianapolis title last weekend and could not believe his success in the second-round matchup.
"I don't know what to think. This is just unbelievable to beat Roger like this," said the 23-year-old Frenchman who is ranked 22nd.
"I was really tight at the beginning but then I had a nice sensation from the baseline, I played my tennis and fought on every point. I can't believe I won this match."