He went back to school , studying sports management at Alfa University in Belgrade , and Reader said the rest Troicki 's body received should add a `` couple of years '' to his career . Viktor ##ia returns to the professional tour after serving a one - year medical suspension . Troicki did n't take a test but initially refused to take a drug test in January 2013 . Formerly the No . 12 in the world , Troicki 's ranking has fallen to 842nd . He went back to school during his time away , studying sports management .
Viktor ##ia returns to the professional tour after serving a one - year medical suspension . Troicki did n't take a test but initially refused to take a drug test in January 2013 . Formerly the No . 12 in the world , Troicki 's ranking has fallen to 842nd . He went back to school during his time away , studying sports management .