World number one sealed a 6-3 6-2 6-2 over Dustin Brown on Centre Court.
All the best photos from the first few days at the world's most prestigious tennis grand slam event.
BBC pundit alleges that "issues with his wife" have led to Djokovic's downturn in form.
A total of eight players have retired from Wimbledon so far.
Nadal and Federer have played each other 3 times this year with the Swiss master winning on all 3 occasions.
Federer was in complete control before injury forced Dolgopolov to retire.
Klizan withdraws with leg injury at 6-3 2-0 down in clash with world number four.
Here's how grunting affects player's performance.
Mark Philippoussis, Marat Safin, Andy Roddick and Andre Agassi reflect on their Federer encounters.
Williams' pink bra straps were visible during her opening match against Elise Mertens.
Nadal survived a few minor wobbles to make light work of Millman on Court One.
Defending champion prevails 6-1 6-4 6-2 in rain-affected first round win.
Serbian begins campaign at SW19 against Martin Klizan on Tuesday [4 July] after turbulent 12 months.
The former Wimbledon champion said Williams would rank 700th if she played on men's tour.
Djokovic has already won his first title since partnering up with Agassi in late May.
Robbie Fowler expects Liverpool's next signing 'pretty soon' as Oxlade-Chamberlain rumour resurfaces 
Zlatan Ibrahimovic on course for Manchester United return as injury recovery gathers pace 
Rafael Nadal questions Wimbledon officials' decision after Roger Federer gets Centre Court nod 
Deportivo convinced Arsenal still want Lucas Perez despite Alexandre Lacazette arrival 
Barcelona target Paulinho hoping to complete move by the end of the week 
