Novak Djokovic made a convincing start to the defence of his Monte Carlo Rolex Masters title with a second-round thrashing of Albert Montanes.
The world number two, who received a first-round bye, ended Rafael Nadal's eight-year winning streak by the Mediterranean last year and needed just 45 minutes to dispatch Montanes 6-1 6-0.
The first set was more competitive than the scoreline suggested but Spaniard Montanes won only five points in the second as Djokovic strolled through.
Also into the third round is ninth seed Jo-Wilfried Tsonga, but the Frenchman had a much tougher time in beating Germany's Philipp Kohlschreiber 6-4 1-6 6-4.
Twelfth seed Grigor Dimitrov needed three sets to beat Marcel Granollers 6-2 4-6 6-2 in the first round but there were defeats for Mikhail Youzhny and Jerzy Janowicz.
Thirteenth seed Youzhny was beaten 6-3 7-6 (7/4) by Italian Andreas Seppi, while Janowicz's miserable run continued with a 6-4 6-2 loss to Michael Llodra.
The Pole, who reached the Wimbledon semi-finals last summer, has lost his last six matches.