Bennetton Treviso threatened an upset against Heineken heavyweights Biarritz Olympique by pushing them all the way Stadio Comunale di Monigo.

They scored four tries, but conceded six in a pulsating match that saw the lead change and change again in front of a feverous home crowd that willed their troops on to the final whistle.

But Biarritz eventually ran in winners, and their victory means they remain in control of Pool Four in the Heineken Cup.

They were made to work for their victory by a strong Italian challenge that was rewarded with a bonus point thanks to their four try haul.

Thomas Lievremont scored twice in the first half for Biarritz but Antonio Pavanello and Marius Goosen repplied for the home side who trailed 14-12 at the break.

But Fijian wing Sareli Bobo went over twice as well as Benoit August and Philippe Bidabe to secure the win. Salvatore Garozzo’s late try earned Treviso the bonus point.