World number one Novak Djokovic ended the dream run of Russian qualifier Aslan Karatsev in the Australian Open semi-finals on Thursday to maintain his bid for a record-extending ninth title.The 33-year-old Serb, showing no ill-effects from an abdomen injury sustained in the third round, overwhelmed the 114th-ranked Karatsev 6-3, 6-4, 6-2 to reach his 28th grand slam final.“This is the best I’ve felt in the entire tournament,” said Djokovic, who hit 30 winners and 17 aces. “I could swing through…
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