Robbie Diack and Darren Cave, who both played the full 80 minutes of Ireland's first Test against Argentina, are hoping to use the summer tour as a springboard for further caps.
Robbie Diack, who qualifies for Ireland through residency, made his Test debut in the 29-17 victory over the Pumas and the experience has the South African-born back rower hungry for more.
Thrilled to win his first international cap, he said: "It's been a moment I've been looking forward to for my whole rugby career, I've always wanted to play professional rugby and to get there and get a cap under the belt is special for me, especially because it is with such a special team.
"Standing and singing the anthem was a moment I'll never forget. It's been a long week, I'm now glad it's over and that we got the win."
Diack lined out at blindside flanker and seemed to revel in the physical nature of the clash at Estadio Centenario, tackling and carrying strongly and also featuring prominently as a lineout jumper.
"I was happy with aspects of my game, but there are definitely things I'll have to work on. I thought in defence I could have worked harder at times," he admitted.
"I'm still very happy. To get my first cap, to get 80 minutes and the win it's a day I will never forget and I just want to cherish it."
When giving his reaction afterwards, Joe Schmidt singled out Diack for his 'hard work in the first half' and the 28-year-old, who has played for Emerging Ireland and the Wolfhounds in the last 12 months, will hope for more game-time in next weekend's second Test.
Schmidt was also pleased with the contribution of industrious centre Darren Cave as the post-Brian O'Driscoll era began with the Ulsterman in the number 13 jersey.
Cave made a terrific midfield break early on and was inches away from scoring a try in the final quarter, just putting a foot in touch under pressure from Tomas Cubelli as he touched down in the left corner.
It was a sixth Ireland cap and fifth start for the Holywood native, but those appearances have been spread out over five years - he made his debut on the 2009 summer tour - and his determination to nail down a regular starting spot is obvious.
In assessing his efforts as part of an all-Ulster centre partnership with Luke Marshall, Cave said: "I'm pretty chuffed with how it went. I got my hands on the ball early, which was good. To be honest it's left me wanting more. I made a couple of small mistakes, as did everyone, and it just leaves me wanting to play next week."
With the Pumas fielding a largely domestic-based team, there was a degree of unfamiliarity that Cave and company had to cope with as they prepared for the tour opener.
"When I first saw the list of Argentinian players on the plane I didn't know a lot of them. Joe has hammered us with the individual player profiles all week and I've been very impressed, particularly with club rugby in Argentina, which I would have known absolutely nothing about. I've been very impressed with the standard."
Having played his first international since last year's North American tour, the 27-year-old wants to retain his starting jersey and help Ireland see out a 2-0 series win.
"I was sucking diesel a wee bit if I'm honest, having not played in a couple of weeks and it being a bit humid and a bit warm. But, as I said, it's just left me wanting more."
The Irish touring party have flown back to Buenos Aires ahead of the second Test in Tucumán, for which some personnel changes are anticipated.
Head coach Schmidt said: "We'd expect that there will be changes. We'll have a look at who came through today over the next 48 hours.
"We won't do a lot tomorrow (Sunday), a little recovery and back to Buenos Aires. We'll try and make some decisions on Wednesday."
Half-backs Conor Murray (dead leg) and Jonathan Sexton (tight quad muscle) picked up injuries during the three-try victory in Resistencia. The strapping applied to Murray's left leg was precautionary.
The Ireland XV to play the Barbarians at Thomond Park on Thursday night (kick-off 7.45pm) has been named. Jamie Heaslip will captain the side that contains two uncapped players in the starting line-up and a further three among the replacements.
Shane Jennings will captain the Barbarians against Ireland XV at Thomond Park on Thursday night (kick-off 7.45pm). He captains a starting side containing nine different nationalities with 466 international appearances between them.
Ireland Under-20 backs Nick McCarthy and Garry Ringrose and Feargal O'Rourke from team sponsors PwC spoke to Irish Rugby TV as the squad prepare for the World Rugby U-20 Championship which starts next week in Italy.
We caught up with Sean O'Brien at the Canterbury Ireland training kit launch where he spoke about next week's Barbarians game, the build-up to the Rugby World Cup and 'moving forward' with Leinster next season.
We caught up with Ireland international Luke Fitzgerald at the launch of the new Canterbury Ireland training kit. He spoke about his recovery from shoulder surgery and his aim to be fit for the Guinness Summer Series games in August.
Ireland Men's Sevens squad member Matthew D'Arcy is gearing up for a 'long and tough season' of Sevens rugby this summer. "It's very exciting (to be involved), there's a huge opportunity for us all," he said.
IRFU Director of Sevens and head coach Anthony Eddy talks about the Ireland Men's Sevens squad's upcoming tournaments and ambitions, while squad members Cian Aherne and Tom Daly tell us about their enthusiasm to play Sevens for Ireland.
IRFU Performance Director David Nucifora speaks about the newly-announced Ireland Men's Sevens squad and structures, and we also hear from squad member Matthew D'Arcy on the training camps and how he got involved.
IRFU Women's Rugby Ambassador Fiona Coghlan played in three Rugby World Cups and captained Ireland to Grand Slam glory. She believes the 2017 Women's World Cup in Ireland will be a 'hugely successful and exciting' tournament.
Thrilled that the 2017 Women's Rugby World Cup will be held on home soil, Ireland head coach Tom Tierney says there will be 'a lot of planning from a coaching and player point of view so that we give it our best shot and leave everything out on the field in 2017'.
They needed a 27-point winning margin against Scotland. They got that and more. The Ireland Women's team captured their second Women's RBS 6 Nations title in style at Broadwood Stadium - relive their Championship winning day in our exclusive video.
It was nail-biting, nerve shredding and epic! Relive Ireland's RBS 6 Nations Championship day from the squad's arrival at Murrayfield to the trophy presentation in our exclusive tunnel and pitch cam video.
Larissa Muldoon, now a two-time Women's RBS 6 Nations winner, is part of an all-Donegal half-back pairing for the Ireland Women. She spoke to Irish Rugby TV about the developing clubs in her own county.