Jaguares will be without captain Agustin Creevy for next weekend's Super Rugby clash with the Lions after he was suspended for a dangerous tackle against the Sharks.
Saturday's match in Buenos Aires saw the Argentinian side denied late on as Pat Lambie kicked the visitors to a 25-22 win with one minute remaining.
It was an eighth defeat of Jaguares' debut campaign and their disappointment was added to by Creevy's citing for a challenge on Sharks' flanker Jean Deysel that resulted in the forward being carried off on a stretcher.
Deysel landed awkwardly following the challenge just after the half-hour mark, and at his hearing Creevy acknowledged the tackle was dangerous.
"In my assessment the offending was not intentional," SANZAAR duty judicial officer Robert Stelzner said in a statement on Monday.
"It is not a case of lifting and dropping or driving an opponent nor a neck roll type offence which would have not only made the offending more serious but would have warranted an increase in sanction based on aggravating factors.
"The fact that his opponent was injured is regrettable, but that was in part also attributable to the opposing player's own momentum, the fluidity of the situation and the player himself being somewhat wrong footed and desperate to stop the charge.
"He clearly did not do so intentionally."
Creevy's would have been banned for two weeks, however, his previous conduct and guilty plea saw a reduction to just one week.
And Jaguares could be without a second player for their trip to Johannesburg with Leonardo Senatore due before a judicial hearing for allegedly biting Keegan Daniel in the same match.