Red-hot title favourites Rohan Browning and Hana Basic have made light of cool, breezy conditions to cruise through the opening rounds of the 100m at the Australian Olympic track and field trials.
Browning clocked the fastest men's time of 10.39 seconds at Sydney Olympic Park on Friday, while Basic jogged home in 11.76.
Browning has yet to cross the line first in a national 100m final, having been pipped to the post by Eddie Osei-Nketia in 2019, with the big New Zealander again shaping as the main threat this year.
The Sydneysider already has the Olympic qualifying standard locked away courtesy of his run of 10.05 at last month's Queensland Track Classic which moved him to third spot on the Australian alltime list.
"This weekend is all about winning," said the 23-year-old Browning.
"I've got the qualifier and I know I can run fast.
"It's always easy to run fast in good conditions, but this is just about trying to beat the other guys."
Browning's leading domestic rival Jack Hale was a disappointing third in his heat in 10.80, although it was enough to earn a place in the semis.
Basic went agonisingly close to the brutally tough Olympic women's qualifying mark of 11.15 last month in Brisbane when she clocked 11.18 and 11.19.
She cruised through her heat on Friday with the promise of much better to come in Saturday's semi-final and final.
"I'm really happy with that," said the 25-year-old.
"We wanted to use the first 60 metres of the race to execute how I wanted to and then switch off because there are three rounds.
"The conditions aren't really favourable tonight so we thought we wouldn't squeeze it.
"We'll save that for tomorrow."
Multiple national record holder Stewart McSweyn could hardly have been more impressive in clocking the fastest heat time of three minutes 40.18 seconds in the men's 1500m.
The Tasmanian has already bettered the Olympic qualifying standard in the 1500m, 5000m and 10,000m, but will almost certainly target the 1500m in Tokyo.
The competition will be fierce for the other two 1500m spots on the Games team, with McSweyn's training partners Matthew Ramsden and Ryan Gregson also easing through to Sunday's final along with young gun Jye Edwards.
To further confuse the selection picture, US-based runner Oliver Hoare has been given dispensation to skip the trials due to COVID travel restrictions.
Australian record holder Catriona Bisset qualified fastest for the women's 800m final on Sunday with a time of 2:03.48.
Morgan Mitchell was a late withdrawal with an achilles tendon complaint.