Top seed Novak Djokovic opened his Wimbledon campaign with a straight-sets victory over Florian Mayer.
Djokovic, who won the title in 2011, prevailed 6-3 7-5 6-4 and will play an American in the second round - either Bobby Reynolds or wildcard Steve Johnson.
In a repeat of last year's quarter-final, world No 1 Djokovic came through a tight contest thanks to a solitary break in each set.
The Serb, playing for the first time since his French Open semi-final defeat to Rafael Nadal, claimed the opening set in 29 minutes.
He was made to work harder in the second set by world No 34 Mayer, who was unable to take any of the three break points he created during the match.
And Djokovic closed out the result in efficient style to ensure a successful first outing on grass this season as he bids for a seventh Grand Slam title.
"It was a big pleasure again to perform here on Centre Court in front of a packed crowd," he said.
"For the first round it was tricky because Florian Mayer is a very good opponent with a good quality and good variety of shots and I think he is well suited to grass so it took a lot of effort.
"There are still a few things I would like to do better on the court. I could serve better. But generally my game is there of course. It's normal in the first round that I'm still trying to find my rhythm."
Fourth seed David Ferrer also went through against Martin Alund of Argentina but did not have things all his own way in a 6-1 4-6 7-5 6-2 triumph.
The French Open finalist took two heavy falls on the greasy Centre Court against a man whose only grass-court experience amounted to a couple of qualifying matches at Eastbourne.
A solitary break in the second set was enough to get Alund back on terms with the Spaniard, however Ferrer crucially took the third set before winning three games to love in succession in the fourth to set up the win.
There were straight-forward wins for seventh seed Tomas Berdych, who beat Martin Klizan of Slovakia 6-3 6-4 6-4, and eighth-ranked Juan Martin Del Potro, a 6-2 7-5 6-1 winner against Spain's Albert Ramos on a day lacking the drama of Monday.