The Australian Open got off to a dramatic start with Daniil Medvedev destroying a camera and racket in a mid-match outburst during the event's opening contest.
Alcaraz, who will surrender his world number-one ranking to Novak Djokovic at the end of this tournament, admitted he was motivated by matching Federer in defending his crown.
People on social media blasted the gestures done by a coach and the father of a 16-year-old female tennis player from Czechia, calling it inappropriate.