Thanasi Kokkinakis fought back from a set down to beat Arthur Rinderknech and claim a maiden ATP Tour title at the Adelaide International 2 in his hometown.
Kokkinakis was beaten by Gael Monfils in the semi-final of the Adelaide International 1 last weekend, but the 25-year-old got his hands on the trophy on Saturday after a 6-7 (6-8) 7-6 (7-5) 6-3 win.
The Australian saved two match points in a semi-final defeat of Marin Cilic and showed his fight again to deny Rinderknech a first title.
Kokkinakis has had a tough time with injuries since rising to a career-high ranking 69 as a teenager in 2015, but he has shown what he is capable of early in the season ahead of the Australian Open.
There were no break point in the first two sets, but Frenchman Rinderknech failed to hold twice in the decider on a special day for Kokkinakis.
Kokkinakis said: "I wouldn't want to win my first title anywhere else. To my family, friends and coaches, what a ride it's been. You have seen me at my lowest lows and now the highest high. It's been a serious journey. For now, I am so happy.
"I've been playing and practising on this court since I was eight or nine years old, coming here before school every day. I love this court so much."
Kokkinakis will play qualifier Yannick Hanfmann in the first round of his home grand slam next week, while Rinderknech takes on Alexei Popyrin at Melbourne Park.