Biggar stars for Ospreys
Ospreys opened their Heineken Cup campaign with a bonus-point win over Treviso at the Liberty Stadium, but only after snuffing out a second-half comeback.
The Welsh region were indebted to tries from Eli Walker, Hanno Dirksen (two) and Ashley Beck, while 18 points came from the boot of out-half Dan Biggar.
Treviso scored two tries through Manoa Vosawai and Luke McLean, while Kris Burton supplied seven points with the boot.
Ospreys' Pool 2 victory was some revenge for their 12-6 defeat at the hands of the Italian side in the opening game of the Pro12.
Treviso suffered a setback when Alessandro Zanni, their 66-cap Italy openside, pulled out just before kick-off with a back injury and once Walker got the opening try in the 18th minute, the home side never looked back as they coasted to an easy win.