A new star outduelled one of the PRO12 veterans as Owen Williams led his Scarlets to victory over Ronan O'Gara's Munster as Scarlets push their rival Ospreys into 5th.

Cardiff Blues needed to spark their season as 2013 arrived. Munster were standing in the way as the visitors looked to close the gap. And it was an Irishman that was the difference... but he wasn't playing for the home side.

Unbeaten Ulster went to a wet Thomond - could their defence handle their Irish rivals in a fierce inter-pro derby?

Former Blue Casey Laulala brought his Munster side to the Arms Park, but which side adapted to a rainy night in South Wales?

In a repeat of last season's semi-final, Ospreys faced Munster at home. With a new coach, could the Munstermen wash the memory of the evisceration they received in the play-off? Or would the Ospreys drive the memory home?

A pulsating game that pretty much had everything. Ulster came away with the win but Munster took them all the way.