Twenty-four-time Grand Slam champion Novak Djokovic retired from his Australian Open semifinal match against Alexander Zverev ...
An injured Novak Djokovic quit because of a torn muscle in his left leg after dropping the first set of his Australian Open ...
With all the attention on Novak Djokovic's quest to become the first player to win 25 grand slam titles in Melbourne this week, another history-making moment slid under the radar - until now.