Fitzgibbons had been in fantastic form all event, being rewarded by the judges for her ability to link turns together with her trademark smooth style.
And this week at the Australian Open Of Surfing Fitzgibbons notched four of the top 10 wave scores and two of the top three heat totals, proving that she was the inform surfer of the event and that she's not being hampered by her wrist injury.
The 21-year-old Australian timed her turns to perfection to take out the event and claim the $8,000 (USD) winners cheque.
"It's unbelievable!" Fitzgibbons said. "I was just focusing on working through my boards and going through some heats and before I know it I'm in the final.
"Sofia (Mulanovich) is such a tough competitor, I knew she'd be able to get the score needed, so it was a nervous wait at the end there. To win in front of this crowd, with so much support feels amazing! Then to have won the US Open and then the first ever Australian Open back to back is a special achievement."
Watch the highlights of the final day of the Australian Open of Surfing in this video...
The next event on the ASP Women's World Tour is the Roxy Pro Gold Coast, which runs from February 25 to March 7.
- Official ASP World Tour website
- More surfing on redbull.com
- Watch a live webcast of the Roxy Pro Gold Coast