World No. 1 Novak Djokovic has pulled out of the Davis Cup tie against India owing to fatigue and family commitments, Serbian captain Bogdan Obradovic told this to reporters in Bangalore. He said he spoke to Djokovic in this regard.Djokovic has also sought to spend some time with wife Jelena, who is expecting The Davis Cup World Group Tie between India and Serbia begins in Bangalore on Friday.