Ulster grab narrow win over Zebre

A late penalty try and Niall O'Connor's conversion give Pro12 leaders Ulster a narrow 27-25 win over bottom club Zebre.

The Parma-based Zebre outscored unbeaten Ulster by four tries to two but Niall O'Connor landed five penalties for the visitors.

Ulster have won all 10 of their competitive matches so far this season, eight in the Pro12 and two in pool stage of the Heineken Cup.