Some quotes from JC after the first match.
2001 winner Juan Carlos Ferrero, the number seven, continued to impress on the surface as he moved through when opponent Sergiy Stakhovsky retired injured to hand over a 6-3, 4-2 victory to the senior Spaniard.
"The feelings are still different from Monte Carlo," said former French Open champion Ferrero, winner of two clay titles in February.
"The court is faster than Monte Carlo, but the ball is heavier. You need a few days to get adjusted to the speed and power."
Fourth-seeded Chilean Fernando Gonzalez suffered a shock 6-4 6-7 (8-10) 6-3 upset at the hands of Spanish qualifier Albert Ramos-Vinolas, while in-form seventh seed Juan Carlos Ferrero of Spain also advanced after leading 6-3 4-2 when his Ukrainian opponent Sergiy Stakhovsky retired.
"I have a good feeling and the truth is I am playing some solid tennis," said Ferrero. "With (Rafael) Nadal out it means things are a bit more open."