Serbian star tennis legend Novak Djokovic suffered a sudden and stunning first-round exit at the US Open after Argentina's Mariano Navone defeated him in a 5-set marathon. Navone prevailed 7-6(5), 5-7, 4-6, 6-2, 6-1 in a gruelling contest lasting four hours and 36 minutes, ending Djokovic's high campaign and recording a memorable upset.
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US Open Shock: Djokovic Crashes Out After Navone Upset
