GARETH Anscombe says Wales have a spring in their step thanks to their Springboks scalp but know they must up their game in Argentina.

Warren Gatland's men take on the Pumas in San Juan on Saturday and then Santa Fe seven days later (kick-offs 7.40pm).

They have travelled to Argentina buoyed by their 22-20 victory against South Africa in Washington, their third victory on the spin versus the Boks and a first win against them outside Cardiff.

Wales made hard work of it after leading 14-3 at half-time following scores by full-back Hallam Amos and scrum-half Tomos Williams and needed a fortunate late try by replacement hooker Ryan Elias to wrestle back the lead.

But Cardiff Blues fly-half Anscombe believes the tourists will be better for blowing away the cobwebs in a tough encounter.

"The big thing for us is we're one from one and we've talked about winning three games on the bounce," said the 27-year-old.

"We're definitely capable of doing that. We will take confidence from our win against South Africa.

"I've played Argentina once at age-group level and they're a passionate bunch. All you have to do is look at the way the Jaguares have been going in Super Rugby.

"They've been on a roll, they're having their best season so far, so they'll be very excited for this series. They're a group who have been together for a while and we've certainly got our work cut out.

"I don't want to take anything away from South Africa, but they were a bit like us in that they had limited preparation and were missing a few guys. It will be very different in Argentina in their house."

Anscombe and Rhys Patchell will share the duties at fly-half on tour in the absence of the rested Dan Biggar, knowing that they must grab every chance in the build-up to next year's World Cup in Japan.

"There is an opportunity for myself and 'Patch' too," said the European Challenge Cup winner.

"There are a couple of Tests to go and every time you get a chance to start at this level it's an exciting one.

"I hope I can build on this because I've only had a couple of starts now. I've enjoyed them and I'm looking forward to getting a chance in Argentina now.

"I've got to put my best foot forward and with a few guys absent it's an opportunity for those of us who have maybe played more rugby to step up and lead. We've got an exciting outfit and I'm enjoying being a part of it."

Warren Gatland names his 23 for the first Test at 4pm and is likely to tinker with the line-up after promising every tourist an opportunity.

Tomos Williams, who finished the season strongly with Cardiff Blues, was hugely impressive in Washington and hopes to be involved again.

"You always want to keep hold of the shirt but there's a lot of competition so I will keep working hard," said the 23-year-old, who was backed up by Aled Davies in America with Six Nations starter Gareth Davies rested after his PRO14 final exertions with the Scarlets.

"It is always nice to get a try but the win was more important. I think it was a good performance overall.

"It's the first time Wales have ever beaten South Africa on foreign soil so we are pretty happy. The weather conditions made it a scrappy game.

"I never played against Argentina at age grade level so I am looking forward to this opportunity," said Williams.

"They have some really big boys and are very similar to South Africa. So it is going to be a tough challenge but one we are looking forward to."