ATP Belgrade: Aslan Karatsev stuns Novak Djokovic in a thriller

In one of the best matches of the season so far, Aslan Karatsev stunned world no.1 Novak Djokovic 7-5, 4-6, 6-4 after three and a half hours to reach the Serbia Open final! The Russian saved 23 out of 28 break chances and secured six breaks that carried him over the top.