MONTREAL -- Canadian Philip Bester lost in straight sets to Gilles Muller of Luxembourg on Monday in the first round of the Rogers Cup men's tournament.

Bester, ranked 201st in the world, lost 6-2, 6-3 to No. 46 ranked Muller.

Bester was hardly a match for Muller's powerful serve, which consistently clocked in at over 205 kilometres per hour. Bester was plagued by unforced errors throughout and never managed to break Muller's serve.

The North Vancouver, B.C., native was down 3-0 in the second set but made a set of it late, holding for serve on three occasions. The match lasted just over an hour.

On the main court, Gael Monfils of France beat Italy's Fabio Fognini in straight sets, 6-3, 6-1.

Earlier on Monday, Vancouver's Filip Peliwo lost to Ukraine's Sergiy Stakhovsky in three sets.

Peliwo, ranked No. 526 in the world, lost 6-1, 5-7, 6-2 to the 60th ranked Stakhovsky. Peliwo had two aces to Stakhovsky's seven.

Frenchman Gilles Simon (ranked No. 11) defeated Italy's Andreas Seppi (No. 15) in straight sets, 6-2, 6-4.

Spain's Tommy Robredo (No. 22) needed three sets to beat fellow countryman Feliciano Lopez (No. 21), 6-3, 3-6, 6-3. Robredo will face third-ranked Andy Murray in the second round.

In doubles, Murray and India's Leander Paes convincingly defeated Kevin Anderson and Jeremy Chardy in straight sets, 6-3, 6-1.

Rafael Nadal and Fernando Verdasco beat Tomas Berdych and Jack Sock in three sets while Novak Djokovic and Janko Tipsarevic downed Seppi and Viktor Troicki 6-4, 6-3.

Canadians Milos Raonic, Vasek Pospisil and Frank Dancevic were not in action on Monday.

The 10th ranked Raonic will meet Ivo Karlovic in the second round after the Croatian beat Poland's Jerzy Janowicz in straight sets on Monday, 6-4, 7-6.

Pospisil will take on Taiwan's Yen-Hsun Lu on Tuesday while Dancevic will face Spain's Pablo Andujar in the first round.