Lorenzo Musetti retires injured one set away from beating Novak Djokovic at Australian Open

MELBOURNE, Australia — Novak Djokovic has advanced to the Australian Open semifinals after a devastated Lorenzo Musetti was forced to retire hurt when leading by two sets to love.

Novak Djokovic advances to Australian Open quarterfinals on a walkover after Jakub Mensik withdraws

Novak Djokovic has advanced to the Australian Open quarterfinals after Jakub Mensik withdrew from their fourth-round match because of an abdominal injury