Stan Wawrinka became the first major casualty of the men's draw at Wimbledon as he lost in the second round to Juan Martin del Potro.
Wawrinka is the fourth seed and came up against a player who is comfortably better than his world ranking of 165.
The 2009 US Open champion, Del Potro has been beset by injuries almost ever since that victory and this was his first Wimbledon since 2013.
On form here, though, the Argentinian is a high-ranking seed in all but name and it was Wawrinka's misfortune to run into him at the last-64 stage, losing 3-6 6-3 7-6 (7/2) 6-3.
Austrlian legend Laver feels Djokovic may have subconsciously switched off a little having achieved his goal of winning a French Open title
Marcus Willis, a current club coach ranked 772 in the world, came through six qualification matches to reach this year's tournament.
Andy Murray got his Wimbledon campaign off to the perfect start with a comfortable straight sets win over fellow Brit Liam Broady.