A round-up of day one in the men's event at SW19, as Marin Cilic and Stan Wawrinka booked their place in round two.
Last year's runner-up Marin Cilic was a comfortable winner on day one, beating Yoshihito Nishioka of Japan 6-1 6-4 6-4.
The Croatian has designs on another run to the final after blisters put paid to his bid to beat Roger Federer 12 months ago.
"I'm looking at last year's experience as a positive one and the one that I can learn from especially in my psychological approach to the match," Cilic said.
"Psychologically I felt the atmosphere, I felt the pressure, as well. I felt like I was dealing with it really, really nicely, and it gave me great confidence for this year coming back on grass.
"I feel it can give me a slight edge."
Stan Wawrinka came out on top in a heavyweight first-round contest with Grigor Dimitrov.
The former world number three is currently ranked 224th due to a prolonged absence through injury.
Wawrinka needed two operations on his left knee last year and has struggled for form since making his comeback in January.
But the Swiss was always going to be a dangerous floater in the main draw and so it proved as he beat sixth-seeded Bulgarian Dimitrov 1-6 7-6 (7/3) 7-6 (7/5) 6-4.
American Sam Querrey, a semi-finalist last year, fired 15 aces as he secured a 6-2 6-4 6-3 victory over Australian Jordan Thompson.
Milos Raonic won 11 games in a row on his way to beating Britain's Liam Broady and ninth seed John Isner beat Germany's Yannick Maden, also in straight sets.