'I did everything I possibly can' - Djokovic booed as he pulls out after one set of Melbourne semi-final

Alexander Zverev reprimanded the crowd for booing the injured Djokovic

Alexander Zverev embraces Novak Djokovic (Ng Han Guan/AP)

Novak Djokovic left Rod Laver Arena to a chorus of boos after dramatically pulling the plug on his Australian Open campaign a set into his semi-final against Alexander Zverev.

There had been doubt about the Serbian’s fitness until he took to the court after he suffered a left leg injury during his quarter-final against Carlos Alcaraz on Tuesday.