#2 Grigor Dimitrov
World No. 4 Grigor Dimitrov's shoulder injury has not quite let him be at his best. In Dubai, the Bulgarian did not seem to be focused. A shock opening round defeat at the hands of Jaziri 6-4 5-7 4-6 raised questions about the fitness of the ATP World Tour Finals champ.
Although he sizzled in Rotterdam taking out Krajinovic, Andrey Rublev and then a bad hit from him forcing David Goffin to retire, he was forced into submission by the World No 1 Roger Federer in the final.
An unimpressive scoreline of 2-6, 2-6 at the Rotterdam finals against Federer clearly signifies the lacklustre performance that the Bulgarian has been dishing out. Also, in the finals in Brisbane, Dimitrov faced defeat at the hands of the mercurial Nick Krygios who went on to lift the Title.
Time will tell if the No 3 seed can make an impact and leave some telling moments of tennis for fans to cherish.
Who Are Roger Federer's Kids? Know All About Federer's Twins