Roger Federer and Andy Roddick breezed into the third round of the Madrid Masters with straight-set victories.
Federer was barely troubled against Massu in Spain
World number one Federer made short work of beating Nicholas Massu, Chile's number two succumbing 6-3 6-2.
And American Roddick proved too strong for Sebastien Grosjean as he overcame tendonitis in his knees to win through.
The sixth seed's big serve was too hot for the Frenchman as he won 6-4 7-6 (7-3) to set up a match with either Tomas Berdych or Agustin Calleri.
And he insisted he would be fit for that match despite his knee problems, adding: "It's nothing serious."
Heavy overnight rain delayed the start of play after the roof of Madrid's Rockodromo Arena sprang a leak.
When the action did get under way, Gael Monfils had to retire after sustaining an ankle injury while a set up against Dominik Hrbaty in the first round.
The 20-year-old Frenchman won the opener 6-3 but turned his right ankle in the second set with the score at 2-2 when he leapt to celebrate a winner.
Monfils was treated courtside but eventually left in a wheelchair, and doctors later diagnosed a season-ending stretched ligaments problem.
It was his first tournament since he sustained a stress fracture in his left foot at the US Open where he lost in the second round to Wesley Moodie.
"It was the worst pain I've ever felt," said Monfils. "I know my season's over, that's life. I'll just have to be more careful. I still don't really know how it happened."
Argentine fourth seed David Nalbandian dropped a set to Julien Benneteau of France before winning 6-7 (4-7) 6-2 7-5 and now plays Britain's Tim Henman.
Spain's Tommy Robredo went through to the third round with a gritty 7-6 (7-2) 7-6 (7-3) win over Argentine Juan Ignacio Chela.