Fanning's two-wave total of 13.67 out of 20 was enough to win the heat by 2.87 points, less than 24 hours after he cleared himself to compete despite suffering a sprained ankle last week.
The 35-year-old said his heavily strapped left ankle had been a bigger concern going into the heat than his memories of last year.
"It's been a big week actually," Fanning said.
"Got here early and then hurt my ankle so I had to sit on the sidelines and watch the amazing waves go through. It was just like torture ... got it taped up and once you're out in the heat you don't feel anything."It was great to get back out."
Fanning's win means he earns direct passage into the third round of the event.He said that extra time between heats can only help the management of his ankle injury."
Each day just gets better and better so hopefully by the end of the week it'll be all good," he said."It's a gorgeous day out here so just going to live it up."
- AAP