Re: Djokovic hasn't beaten a fellow member of the Big 4 since early June...
Nothing new here, the #2 has been declining for a while now
Singles Ranking: #87
Singles Titles: Dallas CH 2013, Busan CH 2013, Este Fut 2013
Doubles Ranking: #112
Doubles Partner: ProdigyEng
Doubles Titles: Medellin CH 2012, Knoxville CH 2012, Antalya CH 2013, Brownsville CH 2013