▁L l od ra / Z imon ji ć ▁ 4 – 6 , ▁ 5 – 7 , ▁respectively . ▁N est or ▁also ▁claimed ▁the ▁M ixed ▁Dou bles ▁title ▁Australian ▁Open ▁with ▁Kat arina ▁S re bot nik ▁defe ating ▁Han ley / Ch an ▁in ▁the ▁final . ▁ ▁On ▁ 1 3 ▁September ▁ 2 0 1 1 , ▁after ▁claim ing ▁the ▁US ▁Open , ▁J ürgen ▁Mel zer ▁& ▁Philipp ▁Pet z sch ner ▁were ▁announced ▁as ▁the ▁fourth ▁qual ifiers . ▁ ▁J ürgen ▁Mel zer ▁and ▁Philipp ▁Pet z sch ner ▁claimed ▁their ▁second ▁sl am ▁as ▁a ▁team ▁at ▁the ▁US ▁Open , ▁making ▁it ▁the ▁second ▁year ▁in ▁a ▁row ▁that ▁they ▁have ▁claimed ▁a ▁sl am . ▁At ▁the ▁open , ▁they ▁defeated ▁the ▁Polish ▁team ▁of ▁F yr sten berg / Mat kow ski ▁in ▁the ▁final ▁ 6 – 2 , ▁ 6 – 2 . ▁They ▁also ▁won ▁titles ▁in ▁the ▁AB N ▁AM RO ▁World ▁Tennis ▁Tournament ▁over ▁L l od ra / Z imon ji ć ▁ 6 – 4 , ▁ 3 – 6 , ▁[ 1 0 – 5 ] ▁and ▁their ▁ 5 th ▁career ▁title ▁as ▁a ▁team ▁at ▁the ▁Mer cedes C up ▁over ▁the ▁Spanish ▁team ▁of ▁Gran oll ers / L ópez ▁ 6 – 3 , ▁ 6 – 4 ▁in ▁the ▁final . ▁Mel zer ▁also ▁won ▁the ▁M ixed ▁Dou bles ▁title ▁at ▁the ▁W im