The fourth round of the 2012-2013 Rabo Direct Pro 12 was played on Friday and Saturday. Only five matches were played due to one match being postponed. It was a good round for home teams with four of the five matches being won by the home side. The only away team to win was the Ospreys who won against its neighboring Welsh region, the Scarlets. The round again featured players from the Americas as the world´s last remaining geographical area not to be selected to host a Rugby World Cup continues to contribute to the global game.
Zebre v UlsterPostponed due to the tragic death of Ulster centre Nevin Spence last weekend. The match will be played on a yet to be defined date.