Greg McWilliams marvels at Irish depth ahead of St Michael’s College reunion

USA assistant coach Greg McWilliams believes Ireland’s strength in depth highlights how Joe Schmidt has absorbed the harsh lessons of the 2015 Rugby World Cup.

Hamstrung by the absence of Jonathan Sexton, Paul O’Connell, Peter O’Mahony and Jared Payne through injury — in addition to the suspended Sean O’Brien — Ireland suffered a crushing quarter-final defeat to Argentina in Cardiff.