Zverev, who is seeking his first Grand Slam title, admonished the crowd a bit for the reaction during his on-court interview.From NFL plays to college sports scores, all the top sports news you need to know every day.

An injured Novak Djokovic has quit after dropping the first set of his Australian Open semifinal against Alexander Zverev.

Twenty-four-time Grand Slam champion Novak Djokovic retired from his Australian Open semifinal match against Alexander Zverev on Friday afternoon, unable to continue due to a muscle tear in his left leg.