Djokovic wins US Open semi-final, keeps quest for calendar Grand Slam on track

Djokovic handed the German his first break of the night with a double fault in the first set but otherwise showed no mercy, firing off 41 winners and a dozen aces across the entire match.

World number one Novak Djokovic kept his bid for a calendar Grand Slam alive on Friday, overcoming German Alexander Zverev 4-6 6-2 6-4 4-6 6-2 in the US Open semi-final.