• Novak Djokovic succumbs to injury after losing first set
• Sinner to play Shelton in bid to meet Zverev in men’s final
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Djokovic produces another hold to go up 2-1 but his inability to land a first serve is already looking like it could be an issue going forward. Landing just four of his 21 serves at the first time of asking so far, the Serb was taken to break point four times in that game only to fight back and eventually produce the hold. Unable to land a decisive blow, the host broadcaster is already postulating that the occasion may be getting to Zverev.

A much less dramatic hold for Zverev, working his serve and baseline play to drop just a single point.

World No 7 is not fully fit but has mental edge in semi-final over opponent who has repeatedly cowered under pressure

Even before he had undergone medical tests, defined the nature of his physical ailment and planned for his recovery, Novak Djokovic knew what was in store for him in the days after his remarkable quarter-final victory over Carlos Alcaraz on Tuesday, which he pulled off despite struggling with left thigh pain.

Just as he suggested post-match, Djokovic has not been present on the practice courts at Melbourne Park for Friday’s semi-final with Alexander Zverev. After being absent from the practice schedule on Wednesday, his scheduled 2pm training session had been wiped from the list on Thursday morning.