Dylan Alcott is a five-time Australian Open quad wheelchair singles champion.
Alcott defeated American second seed David Wagner in straight sets, 6-4 7-6 (7-2) to win the title for the fifth year in a row.
It didn't come easily, with Alcott broken by Wagner early in the first set before twice breaking back.
Alcott was also well placed at 5-2 up in the second set before Wagner challenged, breaking back and forcing a tiebreaker.
The 28-year-old Aussie briefly stumbled, sending down two double faults at 5-5, before regaining his momentum in the tiebreaker.
"Today was a really special day. When I was 14 years old and I was lying in bed and all I wanted to do was make it in the mainstream," he said after the win.
"I wanted to show that people with disability can be elite at what they do, that they can be normal people.
"I just wanted to see people with disability succeeding in the main stream media.
"Today with the broadcast of the Australian Open with Wide World of Sports this match was broadcast into every single TV in Australia.
"I hope this is just the start and we can keep it going."