Novak Djokovic's bid for a record 25th Grand Slam singles title came to an abrupt end Friday at the Australian Open when the 37-year-old legend had to retire from his semifinal against Alexander Zverev after just one set due to injury.

Novak Djokovic has posted a scan of his injured left hamstring on social media more than 24 hours after being booed at the Australian Open when he quit playing one set into his semifinal because of what he said was a torn muscle.

Djokovic is only interested in tennis' biggest prizes. He still has the game to win them, but at age 37 his body is letting him down