They're renowned for their pace and skill but Australia's women also showed they're up for the physical battle to make a powerful statement in rugby sevens' Olympic debut.
The top-ranked Aussies underlined their gold medal favouritism by dominating their two opening day pool matches, scoring 15 unanswered tries in the Rio heat to seal a quarter-final berth on Sunday.
While a third pool game against the USA is to come, the world series champions are almost certain to play Spain in the last eight and avoid arch-rivals New Zealand in Monday's semi-finals.
Australia were always expected to easily swat aside regional qualifier Colombia, and did so 53-0 in the biggest victory of the day, but they also outclassed Fiji 36-0 in a six-try shutout.
Fiji had shown their power game could unruffle stronger teams with an early 12-7 upset of USA but Tim Walsh's side happily took up the challenge and threw it back.
"Going into the game we expected some shooters, some high tackles, some late hits," coach Walsh said.
"I thought we nullified Fiji's strength and really played to our's.
"They were ready for a physical battle, and that's the way it is going to be from here on in."
Leading challengers New Zealand, Canada and Great Britain all play a more confrontational game and aim to outmuscle the faster, wide-running Australians.
The likes of Charlotte Caslick, Emma Tonegato, Nicole Beck and Ellia Green showed they would have a tough time catching them first.
Caslick finished the day with four tries, equalling Kiwi stars Portia Woodman and Kayla McAlister, to show her class as a playmaker and finisher.
Australia showed no Games' jitters and scored with almost every touch of the ball against the Colombians in what resembled a training run.
"That overall performance was amazing," said co-captain Sharni Williams, who scored their first Olympic try after just 45 seconds. "It's a great start.
"We've set that benchmark and now we'll just keep building."
Walsh was also pleased to come through day one with no injuries as backline linchpin Emilee Cherry overcame her hamstring strain to play, and fully test it out against Fiji with a 60m sprint to score.
New Zealand, meanwhile, wasted little time announcing their medal credentials as they powered past Kenya despite having their captain Sarah Goss and Ruby Tui both sin-binned during the first half.
Even with six players, though, the Kiwis were way too strong as early tries by Portia Woodman, Kayla McAlister and Huriana Manuel set them off and running, and the Kenyans hardly got a look-in as they finished on the receiving end of a 52-0 defeat, with Woodman scoring a hat-trick.
New Zealand followed up that win by brushing aside Spain 31-5.
Great Britain's women launched their Olympic rugby sevens challenge with two pool victories.
Emily Scarratt's team followed up an opening 29-3 victory over host nation Brazil by crushing Japan 40-0 thanks to touchdowns from Amy Wilson Hardy, Alice Richardson, Joanne Watmore, Katy McLean, Emily Scott and Heather Fisher.
They also did not concede a try in either game, setting themselves up for Sunday's Pool C decider against Canada.
Scarratt said: "It was a shaky start, but we know sevens tournaments are not decided on the first day, and we've got two good wins under our belt.
"The second performance was really pleasing.
"We really pride ourselves on our defence, if you don't let other teams score tries, it is generally a lot easier to win games.
"Canada will be a step up tomorrow. They finished third in the World Series this year, and we know we will have to be right on our mettle, but we will recover and prepare properly."
While the Japan game was a stroll - they earlier lost 45-0 against Canada - Britain led only 7-3 at the break after Brazil, inspired by their talisman Paula Ishibashi, dominated territory and threatened a possible upset.
But Britain settled after half-time and ran out comfortable winners on the back of two Natasha Hunt tries, plus touchdowns from Watmore, Scott and Jasmine Joyce, with McLean kicking two conversions.