Novak Djokovic elects not to attempt to retrieve an Alexander Zverev forehand as the German forces a tiebreak.

Novak Djokovic said he did not know if this would be his last appearance at the Australian Open after he retired from his semi-final due to a groin...

MELBOURNE, Australia (AP) — An injured Novak Djokovic quit after dropping the first set of his Australian Open semifinal against Alexander Zverev on...

Alexander Zverev tells the crowd not to jeer Novak Djokovic in a sporting gesture after the Serbian quit the match.

Alexander Zverev tells the crowd not to jeer Novak Djokovic in a sporting gesture after the Serbian quit the match.

MELBOURNE, Australia (AP) — Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his...

MELBOURNE, Australia (AP) — Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his...

MELBOURNE, Australia (AP) — Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his...

MELBOURNE, Australia (AP) — Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his...

Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his Australian Open semifinal against...