Earlier, local hope Matthew Ebden dumped out Frances Tiafoe with a 6-3 6-2 victory that set up an all-Australian second round clash with the big-serving Nick Kyrgios.
"Nick has obviously got a great serve," Ebden said, looking ahead to Wednesday's match.
"That's one of his biggest weapons that carried him through well over the past few years, with the upsets and good results that he's had. He's obviously good around the court. He moves well for a big guy.
"Last year I played (Ivo) Karlovic, I played (John) Isner, these kind of guys. So I wouldn't say Nick's serve is maybe as big or as tall as those guys', but he's obviously very accurate and uses it well."
Ryan Harrison downed Leonardo Mayer 6-4 3-6 6-2 while fellow American Jared Donaldson eased past Jordan Thompson 6-2 6-4. Horacio Zeballos needed 72 minutes to beat Ernesto Escobedo 6-3 6-4 and meets Alexandr Dolgopolov next.
(Reporting by Shrivathsa Sridhar in Bengaluru; Editing by Christian Radnedge)
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