Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his Australian Open semifinal against Alexander Zverev on Friday. Dealing with a what he said was a torn muscle,

Eurosport experts Baraba Schett and Laura Robson were appalled by the crowd's response as Novak Djokovic was booed off after his Australian Open semi-final.

For Djokovic, the withdrawal means that he won't win his record 25th major title and 11th Australian Open. Injuries have prevented him from finishing two of his past four Grand Slam tournaments. He withdrew from last year's French Open before the quarterfinals due to a torn meniscus in his right knee.