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Djokovic worried about leg, bothered by heckler in Australia
Read full article: Djokovic worried about leg, bothered by heckler in AustraliaNovak Djokovic says he is worried about his left hamstring after beating 191st-ranked French qualifier Enzo Couacaud 6-1, 6-7 (5), 6-2, 6-0 in the second round of the Australian Open.