Djokovic too strong for resilient Kohlschreiber

Novak Djokovic got centre court matches underway as he began his campaign to win this year’s Wimbledon. Despite winning in straight sets, last year’s champion was forced to work hard against Philipp Kohlschreiber playing at his 15th successive Championships. Performing at his 60th Grand Slam singles event, the German underdog moved into the top 10…