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 Portugal’s Joao Sousa in the second round, while Nadal will take on Robin Haase of the Netherlands.
Elsewhere, Canadian fifth seed Milos Raonic beat Belgium’s Steve Darcis 6-3 6-4 6-2.
Seventh seed Marin Cilic is also through after he won 6-3 6-3 6-3 against Ernests Gulbis.
Meanwhile, Spain’s Garbine Muguruza started the defence of her French Open title by beating 2010 champion Francesca Schiavone 6-2 6-4.
Fourth seed Muguruza went into the match having won only three times on clay this season, but she cruised through the first set.
Italian Schiavone, 36, won three games in a row to lead the second set but Muguruza fought back to win.
Muguruza will face Estonia’s Anett Kontaveit in the second round.
