Novak Djokovic wrote a heartfelt message to Alexander Zverev on Instagram after his injury retirement in the Australian Open.

Novak Djokovic vs Alexander Zverev, Australian Open Highlights: The first set went on for more than an hour and Djokovic was ...

Novak Djokovic has retired from his Australian Open semifinal against Alexander Zverev after losing the first set in a ...

Alexander Zverev chided the crowd after they booed Novak Djokovic for retiring due to injury after the first set in an ...

Alexander Zverev urges fans not to boo Novak Djokovic, who retired in the Australian Open Semifinals due to injury ...

Novak Djokovic and Alexander Zverev battled in the first Australian Open semi-final. The crowd at Rod Laver Arena only ...

Djokovic is out of the Australian Open after retiring from his semi-final, with Zverev through to face Sinner on Sunday ...

Alexander Zverev had a classy response to Novak Djokovic's medical retirement on Friday. Zverev won the first set of his ...

Zverev will face defending Australian Open champion and No. 1 seed Jannik Sinner, who beat American Ben Shelton 7-6 (2), 6-2, ...

Novak Djokovic will take on Alexander Zverev in the Australian Open semifinals on Thursday, January 23.Djokovic earned a four ...

On Sunday, Alexander Zverev will chase his first Major title against Jannik Sinner in the Australian Open final. The German ...