Devin Toner is anxious that a poor Ireland performance against New Zealand in Dublin this Saturday could tarnish their famous win over the All Blacks in Chicago.
All the players who featured in the win over Canada came through unscathed, with Jordi Murphy the only long-term absentee.
On a more positive note, Iain Henderson has returned to the Ireland fold after recovering from a shoulder injury he suffered last month.
"But while we know that it was a great performance by us, I think they did have an off day as well".
"I think everyone's beatable".
"And I think they'll have more access to it if they've got their second row back".
Head coach Schmidt then made a full 15 changes to take on the world's 18th-ranked side Canada.
England replaced the Canadians at No. 2 with New Zealand remaining No. 1.
Ireland beat the Kiwis 40-29 at Soldier Field after 111 years of trying, with the rematch in Dublin on Saturday.
South Africa were the last team to claim successive victories over New Zealand, all the way back in 2009, but Cronin insists Schmidt has the tactical supremacy to help Ireland emulate that feat.
Retallick was concussed against Australia, and also missed the Ireland match. "So if we don't live up to that ability to perform, that would tarnish the Chicago result".
"Then we try to get less distracted by what our opponents are doing. We have to be aware of it but we can't be obsessed with it". "Everyone's talking about the backlash, but from our point of view we just have to back up what we did, we know we played well and if we go out with the same sort of mindset to put them under pressure to have a huge amount of energy about us then it'll go a huge way towards winning the game".
"They are obviously two world-class second rows", the 6ft 11in lock told RTÉ Sport.
To have first-choice locks Whitelock back with the returning Brodie Retallick would be a major boost for New Zealand's chances of avenging its first loss to Ireland nine days ago in Chicago.
"Then even in the back-end of the game I think Ryan Crotty has been outstanding for them, he's been a real linchpin".
"There's a lot of things we have to improve from Chicago, " Whitelock said.