Two months on, Kerber had her revenge against Barty, and looks in as good a touch as she did when she claimed the 2016 Australian Open and became the world No.1 after claiming the Sydney International title.
Gavrilova, Australia's second highest-ranked woman at No.25 in the world, was left frustrated by her errors, notably one of seven double faults serving into the net twice at 4-all in the second set.
Kerber's backhand, arguably her more reliable shot, is nearly exclusively played cross court but occasionally Kerber utilizes a backhand drop shot.
"I am playing incredible tennis again and feeling just great", Kerber said following the final.
After a poor 2017 season, Kerber had started 2018 very brightly, winning all of her Hopman Cup matches before heading into Sydney, and that confidence may have shown as she was able to see off Barty to claim her first title of the new season. "I have had a great week and the final was not easy against Ash", she added. It's more about me playing matches the right way and doing the right things on and off the court to try and get the results, and to be able to have that No.1 ranking is a bonus.
This was Kerber's first title since lifting the US Open crown in 2016 - the same year she triumphed at the Australian Open when lifting her maiden grand slam title.
Then Kerber broke Barty to go 3-2 up, and held her own to take out the set. "The draw was also not easy, but I was not seeded, so that was also what I was expecting from the beginning, to have really tough matches".
"I was trying to focusing again on my preseason, working hard, and just looking ahead on 2018".
"Angie is obviously back to the top of her game".
"We have set up a ideal platform for me to work with this year to try and go deep in tournaments, whether it's in Australia or in Europe or in the States".
When asked her opinion on Sharapova returning to the Australian Open earlier this week, Kerber was only willing to offer: "She's back and she played not bad in the last few weeks". Regardless whether you're No.1, No.10, or 100 in the world, it's the best feeling for an Australian to be playing at the Australian Open.
"And Angie is on fire".