Ireland have called up Munster flanker David Wallace to replace injured Munster team-mate Alan Quinlan, who dislocated his left shoulder scoring his team's only try in the 16-15 win over Argentina.
Quinlan left the field immediately and had the shoulder relocated but he has already been ruled out for the rest of the tournament.
Irish team management have begun the process of flying Wallace out to Australia.
"Alan Quinlan's World Cup is over. Unfortunately he has dislocated his shoulder," said Eddie O'Sullivan after the enthralling match.
"We have made arrangements for David Wallace to fly out and we're going through the paperwork to make that happen now.
O'Sullivan praised Quinlan's contribution to the game saying that Munster man finished his tournament in style.
"He played a crucial role in today's game, and obviously scored the only try of the match and he's pretty disappointed.
"But if you are going to go out with an injury that was the one to go out on, scoring the winning try, but it's not much consolation to him.
Wallace is a former Lions tourist and his omission from the original World Cup squad was a major shock. Like Quinlan, he is a utility loose forward capable of playing on either the blindside or the openside.
He has also been in good form for his province, scoring a try against Glasgow in the Celtic League on Friday.