There was no discomfort for the Australian Ajla Tomljanovic, who competed hard but could not risk against world number 4 Simona Halep.
Tomljanovic defended himself against breaks in both sets, but still fell 6-4 7-5.
Halep, the second seed, advances to the quarterfinals and will play against the winner of the crash Aryna Sabalenka-Bernarda Pera.
“I was moving quite well. I was strong in my legs. I could respond very well to his very hit balls,” Halep said.
“It was a bit difficult for it to be the first game of the year, and even if you practice weeks in a row, it’s not like when you play a game.”
“So I need some time. I need some games and then I can feel better. But it was fine.”
Australian wild card Priscilla Hon’s first round match ended in a loss to Germany’s Julia Goerges, who prevailed 7-6 (7-5) 6-3 when Vondrousova won a 6-3 and 6-0 victory over German Tatjana Mary.
World No. 1 Ashleigh Barty had a return victory against Russian Anastasia Pavlyuchenkova in the Adelaide International WTA tournament.
Halep hits one of the summer pass shots
It wasn’t always pretty, but he did 4-6, 6-3 and 7-5 on Memorial Drive in his first appearance in the tournament.
“Those difficult victories, those victories when you are not necessarily playing your best tennis, I think they always make you feel very good in the background, knowing that you can get out and out of it,” Barty said.
Barty will play the Australian qualifier Arina Rodionova or the eighth Czech seeder Marketa Vondrousova in the quarterfinals on Thursday.
Ash Barty vs. Anastasia Pavlyuchenkova | Adelaide International
Rodionova caused a jump on Tuesday with a crush on the American Sloane Stephens.
World No. 201 Rodionova triumphed 6-2 6-2 over Stephens, the 2017 US Open champion now ranked 25 in the world.
Sabalenka fought 5-3 down in the third to beat Su-Wei Hsieh 5-7 6-1 7-5 while qualifier Pera scored a 7-6 (8-6) 6-3 win over Barbora Strycova.
Thompson crashes at Adelaide International
Meanwhile, the Australian Jordan Thompson suffered a first-round defeat at the Adelaide International ATP tournament.
Spaniard Albert Ramos-Vinalos shot down Thompson 6-4 6-7 (5-7) 6-3 on Memorial Drive on Tuesday.
Earlier, American qualifier Tommy Paul beat Slovenian Aljaz Bedene 6-4 6-4 and Briton Daniel Evans represented Kazakh Alexander Bublik 7-5 6-2.