Djokovic unsure if hell be fit enough to beat Alcaraz in US Open semi-finals

Serb has made semi-finals in all four grand slamsHe has struggled physically at the end of the majorsNovak Djokovic has admitted he is unsure of how physically ready he will be for his US Open semi-final against Carlos Alcaraz but is determined to do all he can to give himself the best chance against the Spaniard when they face each other on Friday.Djokovic reached the last four late on Tuesday night with a tremendous 6-3, 7-5, 3-6, 6-4 win against the fourth seed Taylor Fritz. Although Djokovic...