Grigor Dimitrov has started the year by winning two tournaments (Brisbane and Sofia) and losing only one match, to Rafael Nadal after FIVE spellbinding sets of tennis. The Bulgarian who early on in his career often was described as baby Federer, has in later years been haunted by the word “underachiever”. But with coach Dani Vallverdu in his team something seems to have clicked and the “Grisha” is playing better than …
