Novak Djokovic has retired from his Australian Open semifinal against Alexander Zverev after losing the first set in a tiebreak. Djokovic missed a regulation putaway volley on top of the net down 5-6,

Novak Djokovic is reportedly facing up to two months out of tennis due to the hamstring injury he suffered at the Australian Open, and might not play again until the French Open. Djokovic was booed off court after retiring hurt against Alexander Zverev in the semi-finals in Melbourne,

Zverev will face defending Australian Open champion and No. 1 seed Jannik Sinner, who beat American Ben Shelton 7-6 (2), 6-2, 6-2, in Sunday's final. Zverev is pursuing his first major tournament title.