Alexander Zverev next number one

Last night Grigor Dimitrov won his first masters title after defeating Nick Kyrgios in straights sets in the Cincinnati Masters final. It made me start thinking if the era of the big four is over… So who are the big four? Well, if you’ve been living under a rock, Roger Federer, Rafael Nadal, Novak Djokovic and Andy Murray are often referred to as the “Big Four” in tennis. Sometimes we Stan Wawrinka gets included as well and the quartet expands to the “Big Five”. These players have simply dominated tennis massively over the last decade and the only slams won …