Ireland head coach Andy Farrell says they'll learn lessons quickly from their one point defeat to England in the Six Nations last evening.
The holders saw hopes of back-to-back Grand Slams end at Twickenham - but can still retain the title next weekend.
Farrell says they're used to going again after a victory, so now must do the same following a loss.
There's one match in the competition today, with Wales at home to France from 3pm.
