• Ten-time Australian Open champion booed off court
• Opponent Alexander Zverev says Serb deserves respect
• Sinner v Shelton – live Australian Open semi-final

Ten-time Australian Open champion Novak Djokovic was booed off the court by some sections of the Rod Laver Arena audience when he sensationally retired hurt from his semi-final against Alexander Zverev on Friday after losing the first set.

The Serb suffered an injury to his groin area in his quarter-final against Spain’s Carlos Alcaraz on Tuesday and took to the court with both dark tape and a white bandage enveloping his upper thigh.