Roger Federer and Serena Williams enjoyed Sunday strolls in the first day of the French Open, but it was curtains for Serena's elder sister Venus, who crashed in the first round to Urszula Radwanska.
Federer, looking for his second Roland Garros title and 18th Grand Slam, hardly broke a sweat in a 6-2, 6-2, 6-3 victory over world number 166 qualifier Pablo Carreno-Busta.
"I felt good," Federer said after the match. "He's played many matches and won a lot this year -- a lot on clay, by comparison with me.
"I knew it could be tricky if I didn't sustain a certain aggressiveness, get caught up in long rallies, maybe what he's looking for.
"I did well on the serve, on the return, on movement. Clearly I'm very pleased. Am I a favourite to win here?
"I don't care, because it doesn't give me any more opportunities to win the tournament. I just want to remain calm and let the storm go by."
Federer faces a tough prospect in David Ferrer, who was made to work pretty hard by Australia's Marinko Matosevic, before prevailing 6-4, 6-3, 6-3, later in the tournament.
"It is not easy play Matosevic because he has a very good serve, very good power with his shots and sometimes I can't play my game," Ferrer said of his opponent.
"Given the player I am with my serve, I can have break points (against me), but it might happen to the other player. It's the way it is on clay. In the final of the second and the third set, I played better, more consistent."
In the women's section, Serena Williams, the overwhelming favorite for the title, was in cruise mode against Ana Tatishvili, beating the Georgian 6-0, 6-1.
Serena, who lost in the first round at Roland Garros last year to Virginie Razzano, was happy to clear the first hurdle.
"I have to say I'm always a little nervous going into first round matches at slams, but this time I wasn't as nervous as I was previously," the 31-year-old said.
"I felt pretty safe and felt good about my game and that if I can just do what I do in practice, I'll be OK."
However, her sister Venus, seeded 30, did not fare as well, with Radwanska, the younger sister of world number four Agnieszka, pulling out all the stops in a tough battle to eke out a 7-6 (5), 6-7 (4), 6-4 victory.
Former French Open champion Ana Ivanovic, though, progressed into the second round with a hard-fought 6-1, 3-6, 6-3 win over Croatia's Petra Matic.
Women's 11th seed Nadia Petrova was the highest seeded casualty losing 3-6, 7-5, 6-4 to unheralded Puerto Rican teenager Monica Puig.
American Sam Querrey eased past Lukas Lacko 6-3, 6-4, 6-4 in the men's singles first round, but compatriot James Blake did not make it past the opening round after going down to Serbian Victor Troicki 6-4, 6-2, 6-2.
