Cory Jane and Nathan Harris are both flying home - their respective tours over following injuries they picked up at Soldier Field.
Jane has a minor hamstring strain that will take at least two weeks to heal, but the medics fear he'd be highly likely to damage it again if he were to be available to play against Wales.
The decision was made on Sunday morning US time to send Jane to New Zealand rather than take him to London.
Harris, how had initially looked like he would be okay despite hobbling off early in the test, has done more damage than first realised. He has torn medial ligaments in his ankle and is looking at a six-week lay-off.