Murray weathered a gallant fightback from Matteo Berrettini before dumping the 13th-seeded Italian out of the Australian Open first round on Tuesday.
Scorching heat halted outdoor matches and sent fans scurrying for shade at the Australian Open on Tuesday as players were given an early test of their endurance on a sweltering day two at Melbourne
“He’s the only one of the Big Four that I hadn’t beaten yet, so I’m happy that I’ve done it today,” Zverev said.
They beat second seeds and Roland Garros champions Pierre-Hugues Herbert and Nicolas Mahut.
Djokovic is now one win away from equalling Roger Federer and Rafael Nadal’s record of 20 slam titles and completing three quarters of a calendar Grand Slam.
Andy Murray test positive to COVID-19, Australian Open participation in doubt