Three-time Grand Slam champion Angelique Kerber, promoted to ninth seed when Petra Kvitova withdrew, dominated China's Wang Qiang 6-1, 6-3.
"It's been an incredible journey for me and my team", she said.
"It's something I pride myself on is that no matter what the score is, I try and hang around for the whole match every time", Barty said after the match. "And at this stage we are just looking at short-term goals and trying to get better each day (with) a lot of treatment", news.com.au quoted De Minaur as saying.
"It's phenomenal to play at home again, it's my backyard where the Brisbane International is played, I train there day in, day out", she said.
Barty admits she never rose to great heights during Tuesday's comeback win against Russia's Anastasia Pavlyuchenkova at the Adelaide International WTA tournament. I won't change anything no matter what my ranking.
"It was a bit of a whirlwind year for us but now we're excited to be back playing, back competing, back doing what I love".
The victory was among the biggest in the career of the 30-year-old Rodionova, who endured two three-set wins in qualifying to reach the main draw.
Talking about serving, Pavlyuchenkova scored just 1 ace during the entire match and she committed only 6 double faults.
Halep is back with Adelaide coach Darren Cahill after his family leave during 2019, and the Romanian said getting through the opening match of the season is an annual challenge.
Qualifying for the $2 million event began yesterday, while the tournament proper begins 5pm today (Sunday) and will be preceded by a Rally for Resilience, featuring Halep and former Australian Open victor Angelique Kerber, with proceeds to go towards supporting the bushfire relief appeal.
Barty used 11 aces and won 72 percent of her first serves in the win, despite her slow start in the two-hour, 10-minute match. "I feel pretty good about myself right now".
And Australian wildcard Priscilla Hon's first-round match ended in a loss to German Julia Goerges, who prevailed 7-6 (7-5) 6-3.
I n men's play, Dan Evans beat Alexander Bublik 7-5, 6-2 and seventh-seeded Jan-Lennard Struff defeated Salvatore Caruso 6-4, 6-2. American qualifier Tommy Paul beat Aljaz Bedene 6-4, 6-4.