Leinster are in Wales to face the Cardiff Blues at the Arms Park in a 3 o'clock kick-off.
The province have restored a host of Irish internationals to their starting side for the game with the likes of Eoin Reddan, Ian Madigan and Fergus McFadden all coming back into the team after international duty.
Also this afternoon, Connacht will be looking to continue their impressive run of form as they travel to Italy to take-on Zebre.
A win for Pat Lam's side would see them take over the top-spot in the table ahead of Ulster's game tomorrow.
Kick-off is at half-past four.
