Sean O'Brien suffers yet another injury

The sides met in last season's November games

The sides met in last season's November games

Robbie dropping out in the warm-up, but we are used to all that.

But sometimes sport isn't fair, plagued with injuries Ireland looked like a shell of the team that won the Six Nations a few months prior as Argentina ripped them apart.

Ireland did have disrupted preparation and ultimately got the job done. Both of their replacements — Dan Leavy and McGrath — had big impacts. From a Peter O'Mahony turnover in the middle of the pitch, Ireland were camped in Argentina's 22 as the away side conceded penalties for multiple infractions.

They managed it in the end, but not before a struggle that was partly of their own making.

Argentina started the second half in a similar manner to the first, with Sanchez kicking his fourth penalty to put them ahead.

Despite their struggling scrum, the Pumas were intent on disrupting.

"They're nervous about Argentina and how good they are". So that's who you want in charge of the national team.

Argentina -Try: Bautista Delguy.

A missed conversion from Sexton allowed Sanchez to restore the advantage two minutes later.

There is what Ireland will do over the next two weeks and there is what it will mean in the long term.

Schmidt's mood won't have been helped by the sight of Seán O'Brien leaving the field holding his arm in a make-shift sling, an injury that will nearly certainly rule him out of next week's game.

After Sanchez accepted another shot from distance through a softly conceded penalty, Sexton nudged the hosts into a scarcely deserved lead after a first half made even worse by the departure of the injury-prone O'Brien, his arm in a makeshift sling.

A late, needless Augustin Creevy tackle on the Ireland out-half handed him a chance to put Ireland back in front but his effort dipped under the bar.

Nicolas Sanchez opened the scoring early on with a fine long-range penalty.

New Argentina head coach Ledesma has made five changes from the 45-34 defeat to Australia in Salta on October 6.

Joe Schmidt's side were eventually held up over the line and from the resulting scrum, Ireland pushed their visitors back a couple of metres before Kieran Marmion showed great awareness to pick the ball up and crash over the line to get Ireland off the mark.

Schmidt is expected to name a front-row of Jack McGrath, captain Best and Furlong, while there is a battle to start in the second-row with Iain Henderson and James Ryan likely to get the nod, with Devin Toner and Tadhg Beirne pushing hard for selection.