![Say that to my face: Djokovic challenges heckler in testy 2nd-round win at Australian Open](https://cdn.newsserve.net/ONPglobe256.png)
Say that to my face: Djokovic challenges heckler in testy 2nd-round win at Australian Open
Already sick and tired in another early round slog, Novak Djokovic unloaded on a heckler who crossed the line at the Australian Open. Defending champion Djokovic angrily challenged…
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