Harry Wilson is determined to hold his ground after sealing his whirlwind international revival with a last-gasp win on his Wallabies captaincy debut in Argentina.

The Queensland Reds favourite was tremendous in the No.8 in La Plata on Sunday morning (AEST), denting the line and making a desperate tackle to thwart a try in their after-the-siren 20-19 defeat of Los Pumas.

A year earlier Wilson, who fell out of Wallabies favour after a breakout 2020 Test campaign, was best on ground for club side Brothers in their Brisbane grand final.

Not part of Eddie Jones' World Cup plans, Wilson then enjoyed a European tour with the Barbarians and dominated for the Reds under new coach Les Kiss.

A broken arm cut his Super Rugby season short but, once fit, new Wallabies coach Joe Schmidt brought him straight back to face South Africa and then anointed him as the fourth captain in his six Tests in charge.

"It feels amazing, pretty special to be sitting here right now," Wilson said.

The loose forward relished the unlikely premiership a year ago, alongside brother Will who was gunning for back-to-back titles in a stacked Brothers side just hours later at Ballymore on Sunday.

In a canny coincidence centre Hamish Stewart, who made his Wallabies debut on Sunday, was also part of that Brothers side last year.

"This time last year having the coolest time of my life paying with Brothers and winning that premiership, but to be sitting here after a Wallabies win," Wilson reflected.

"It's a pinch yourself moment ... I worked hard to get back here and I want to keep building and this is where I want to stay."

Schmidt had been pleased by Wilson's lead-by-example approach, demonstrated when his late tackle attempt on opposite number Juan Martin Gonzalez spoiled what looked a certain, match-winning try.

In wet conditions his trademark expansive play had to be shelves, he and his fellow forwards able to play in tight and slowly wear down the hosts.

The teams will play each other again next weekend but the coach hinted his men might toast their Sunday triumph, Wilson no doubt keeping one eye on proceedings at Ballymore.

"I don't know what they'll be doing but I'll be having a wine, might even have a couple of beers tonight," Schmidt said.