▁tournament s . ▁In ▁teams ▁rank ings , ▁Ch allen ger ▁points ▁were ▁ex cluded . ▁ ▁A ▁player ▁who ▁was ▁out ▁of ▁competition ▁for ▁ 3 0 ▁or ▁more ▁days , ▁due ▁to ▁a ▁verified ▁injury , ▁was ▁not ▁pen al ized . ▁The ▁ 2 0 1 1 ▁Bar cl ays ▁ATP ▁World ▁Tour ▁Final s ▁counted ▁as ▁an ▁additional ▁ 1 9 th ▁tournament ▁in ▁the ▁ranking ▁of ▁its ▁eight ▁qual ifiers ▁at ▁season ' s ▁end , ▁while ▁the ▁Davis ▁Cup ▁Final ▁points ▁counted ▁towards ▁the ▁next ▁year ' s ▁race . ▁ ▁Qual ified ▁players ▁ ▁Singles ▁ ▁On ▁ 1 4 ▁May ▁Nov ak ▁Dj ok ov ic ▁became ▁the ▁first ▁qual ifier , ▁after ▁reaching ▁the ▁final s ▁of ▁the ▁Rome ▁Masters . ▁ ▁Nov ak ▁Dj ok ov ic ▁began ▁the ▁year ▁by ▁winning ▁the ▁Australian ▁Open , ▁his ▁second ▁Grand ▁S lam ▁title , ▁defe ating ▁ 2 0 1 0 ▁runner - up ▁Andy ▁Murray , ▁ 6 – 4 , ▁ 6 – 2 , ▁ 6 – 3 , ▁in ▁the ▁final . ▁In ▁February , ▁he ▁successfully ▁def ended ▁his ▁title ▁for ▁the ▁second ▁time ▁at ▁the ▁Bar cl ays ▁Dub ai ▁Tennis ▁Championships , ▁defe ating ▁Roger ▁Feder er , ▁ 6 – 3 , ▁ 6 – 3 . ▁The ▁Ser b ▁closed ▁the ▁following ▁month ▁by ▁cl inch ing ▁the ▁" American ▁double " ▁( both ▁hard - court ▁Masters ▁title ▁in ▁Indian ▁Well s ▁and ▁Miami