The Pumas' playmaker left the field after 25 minutes with damaged ribs - an injury incurred because he had passed the ball and was then smashed from the blindside; unprotected and unaware, he was the victim of two cheap shots.
Mario Ledesma has received some kind of justice for the head knock he took when Courtney Lawes slid in knees first as the English lock has at least been cited.
It was an ugly challenge and one that appeared more malicious than clumsy. In his defence, Lawes may have been frustrated by the fact that at an earlier breakdown, his boots had been taken off his feet; the Pumas had rucked his socks off so to speak and clearly by the amount of claret that flowed and the obvious volatility of both packs, the Pumas weren't playing so nice either.
The nasty bruise on James Haskell's eye and the fact he said he was initially gouged only to backtrack suggests there was a level of nastiness in that game that may not have been fully appreciated by those not in the thick of it.
Violence has no place in rugby. Late tackles, eye gouging, knee dropping and stamping - when big men indulge in that sort of stuff bones get broken; careers can end and mummies all around the world decide their little Johnny isn't going to play rugby.
That's cheating to whine about.