Mike Ross is set to make his first Ireland start
Ireland coach Declan Kidney has made one change to his starting line-up for Sunday's game against the USA.
Tighthead prop Mike Ross comes into the front row to make his first start after coming off the bench against Canada last Saturday to make his senior debut.
The inclusion of Ross means that Tony Buckley moves from the right side of the scrum to loosehead prop.
The front row reshuffle sees Ulster's Tom Court move to the replacements' bench to replace the promoted Ross.
The rest of the pack remains unchanged with Mick O'Driscoll named in the side despite picking up a slight wrist sprain during the Canadian game last weekend.
Leinster second row Devin Toner has been called into the squad as a precaution.
Alan Gaffney, who was involved with Leinster's Heineken Cup win, joins the squad to work in his capacity as backs coach for the remainder of the tour and the Churchill Cup.
"We felt after last week's game against Canada that the players who started deserved another chance to improve on that performance," said Irish coach Declan Kidney.
"We thought long and hard about making changes to the side, but with only two full training sessions under their belts before the Canada game, we thought it better to give the same players an opportunity to find their feet.
"The majority of those who will not start on Sunday or are not in the matchday 22 will all have further opportunities in the Churchill Cup."
Former Ireland coach Eddie O'Sullivan takes charge of the USA.
Ireland: G Duffy; B Murphy, D Cave, I Whitten, I Dowling; I Keatley, P Stringer; T Buckley, R Best, M Ross; B Casey, M O'Driscoll; J Muldoon, N Ronan, D Leamy.
Replacements: S Cronin, T Court, R Caldwell, D Ryan, E Reddan, N O'Connor, D Hurley.