The rising star made his Melbourne bow by knocking out home favourite Nick Kyrgios in straight sets.
Fellow Brits, Sutton’s Jack Draper, Harriet Dart and Jodie Burrage have also progressed to the second round.
Novak Djokovic, who’s chasing a record 25th Grand Slam singles title, fought from a set down against Nishesh Basavareddy in his first match being coached by former world number one Andy Murray.
Defending men’s champion Jannik Sinner also made it through, as did Carlos Alcaraz.
In the women’s draw, there were first round victories for Iga Swiatek and American Coco Gauff, who’ll face Britain’s Burrage next.
