Ireland coach Joe Schmidt was pleased to achieve a second successive victory over Argentina, even if the performance was far from flawless.
The RBS 6 Nations champions gave six players their Irish debuts during the two-match tour which will increase Schmidt's options, but he was not pleased with the quality of their display in the 23-17 win against the Pumas in Tucuman.
The Ireland boss said: "We've achieved an opportunity where we broaden the group a little bit, we've found out a little bit about some of those players, some who've acquitted themselves really well and some others who've still got some work to do.
"That's an achievement in itself. At the same time we know we have got a heck of a lot of work to do. There are some teams that will put us under a lot more pressure than that.
"I think, again our set-piece probably saved us. We put them under scrum pressure a few times when they had great platforms and when they did get that platform in the last play of the game we weren't able to defend it when they did get the ball in their hands, which is massively disappointing."
Schmidt's attention will now turn to the November series when Ireland will entertain South Africa, Georgia and Australia before preparing for the defence of their Six Nations crown.
He added: "We'll have a bit of a rest now and dust ourselves off and try and approach the Guinness Series still with a bit of positivity, because it's not that long ago that we were playing at the top of our game in the Six Nations.
"I thought today we had a really experienced spine in the team and we probably should have offered a little bit more continuity and it's probably a disappointing performance by our standards."