Ireland sit on the shoulder of England at the top of the Six Nations table, following yesterday's bruising win over the French at the Aviva.
England visit the Aviva in a fortnight's time, and before that Johnny Sexton is due to play for his club Racing Metro next Saturday.
The out-half suffered a nasty gash to the head in yesterday's game, and Ireland head coach Joe Schmidt admitted to being apprehensive about Sexton's return to France.
Two sides looking to get their campaigs back on track meet this afternoon.
Both Scotland and Wales lost their opening fixtures.
Kick off at Murrayfield is at 3.
Connacht are in Pro 12 action this lunchtime – they've made the trip to south Wales to face the Scarlets.
At 3, Leinster play host to the Dragons at the RDS.
In between, bottom side Zebre take on Glasgow at 2.
