When it comes to effort on the tennis court, few players can compare to the legendary Jimmy Connors. The eight-time Grand Slam champion built a reputation for being one of the most hard-working players on the ATP Tour.

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’s quest for a record 25th grand slam title has been cut short at the Australian Open after he stunningly retired from his semifinal match due to a left leg injury.

In a stunning development at the Australian Open, an injured Novak Djokovic withdrew after losing the first set of his semifinal match versus Alexander Zverev.

Novak Djokovic remains one of the best tennis competitors today. At the age of 37, we have yet to see a decline in the Serbian star’s level of performance.

In a matchup more appropriate for a final, 10-time Australian Open champion Novak Djokovic prevails in four sets over reigning Wimbledon champ.

It's hard to watch the way Jannik Sinner plays tennis and not think of Novak Djokovic. Of all the praise bestowed on Sinner after he won his second consecutive Australian Open championship, and third Grand Slam title overall,

The world No. 7 spent most his career with two otherworldly rivals. He is in that situation once again, with one beaten so far in Melbourne.

Novak Djokovic was booed off court after his Australian Open semi-final was cut short due to injury, and his Davis Cup captain issued a passionate defense.

Novak Djokovic has been defended by Serbia's Davis Cup captain as he called for an Australian broadcaster to be fired.