Novak Djokovic has retired injured from his Australian Open semi final, after just one set.
It has handed Alexander Zverev a default win and a spot in the men's final, taking the one and only set in a tiebreaker, 7-5.
Djokovic, who is a 10-time Australian Open grand slam winner, has been dealing with injury throughout the tournament, playing the first set with a heavy strapped left thigh.
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Djokovic was jeered off Rod Laver Arena, with Zverev jumping to the 37-year-old's defence immediately afterwards in his on-court interview.
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