Laver Cup: Here’s everything you need to know about the team event featuring soon-to-be-retired Roger Federer and other top players. London: Roger Federer will be joined by his ‘Big 4’ adversaries Novak Djokovic, Rafael Nadal and Andy Murray in representing Team Europe in the Laver Cup that gets underway on Friday. The Laver Cup, brainchild of Federer’s management company, sees …