Walder scored a hat-trick and converted eight of his side's 14 tries at Stadio Tommaso Fattori. Prop Robbie Morris, flanker Cory Harris and England centre Jamie Noon scored two each as the Italian defence conceded over 40 points in each half to the Guinness Premiership side

At Sixways Stadium, Shane Drahm's 20 points inspired the Warriors to a valuable 30-20 victory over Connacht.

The victory gives Worcester the lead in Pool 5, but they face a tricky trip to Connacht next weekend before they start thinking about the quarter-finals.

The Warriors struck the opening blow with a try to fullback Nicolas Le Roux, but the 17th-minute sin-binning of skipper Pat Sanderson proved costly. Connacht fly-half David Slemen converted the penalty and then added the extras to centre Keith Matthews' try.

Drahm converted his own try to give the home side a 14-10 lead at the break, and the Warriors needed the Australian's reliable boot to keep their noses in front.

Three second-half penalty goals from Drahm cancelled a Matt Mostyn try, and a last-minute try to backrower Drew Hickey sealed the victory.

Northampton fullback Bruce Reihana was among the try-scorers in the Saints' 32-20 home win over Narbonne, and the Kiwi's 12 points with the boot proved the difference on the day.

Reihana and backrowers Dan Browne and Sam Harding gave Saints a handy 20-7 lead at halftime, but Narbonne's gritty comeback will sound the alarm bells ahead of the English club's trip to France next weekend.