Defending champion Novak Djokovic won his first match under new coach Andre Agassi to reach the second round of the French Open in Paris.
The 12-time Grand Slam champion teamed up with American Agassi after parting company with his entire coaching team.
The world number two Serb, who could meet Rafael Nadal in the semi-finals, beat Marcel Granollers 6-3 6-4 6-2.
Spaniard Nadal, bidding for a 10th French Open title, eased past France's Benoit Paire 6-1 6-4 6-1.
Djokovic faces either compatriot Janko Tipsarevic or Portugal's Joao Sousa in the second round, while Nadal will take on Robin Haase of the Netherlands.