Tokyo - Ireland opted not to appeal Bundee Aki's three-match ban for a high tackle on Thursday, confirming he will miss this weekend's Rugby World Cup quarter-final against New Zealand.
Kick-off is at 12:15 SA time.
"The Ireland management will not appeal the sanction handed down to Bundee," the Irish Rugby Football Union said in a statement.
"We are disappointed with the outcome and believe that Bundee's time will be best served helping prepare the squad for its remaining RWC19 fixtures."
Aki was shown a red card after his shoulder crashed into the head of Samoa flyhalf Ulupano Seuteni during Ireland's 47-5 win in their final Pool A match.
Aki, who has Samoan roots, had even received support from the Samoa team which urged the judicial panel to "see some sense" and spare him a ban.
Ireland added that hooker Sean Cronin had been ruled out of the rest of the World Cup after he "aggravated a pre-existing neck muscle complaint".
He has been replaced by Ulster's South African-born Rob Herring.