Leicester, Cardiff Blues, Scarlets and Bristol secured wins after round one of the Challenge Cup.
Leicester started their first European Challenge Cup campaign with a comfortable 41-20 win over Pau as Welsh winger Jonah Holmes scored four tries.
Fly-half George Ford, back on club duty following England’s run to the World Cup final in Japan, kicked an early penalty before George Worth went over in the 13th minute and Holmes quickly added a second try.
Pau scrum-half Thibault Daubagna crossed from close range before Holmes made the most of an offload from Ford to break down the right as the home side went into half-time 24-13 ahead.
Saturday’s other Pool 5 game saw Cardiff Blues run out 38-16 winners at Calvisano as they secured a bonus-point victory.
Full-back Matthew Morgan collected his own chip behind the home defence to open the scoring after five minutes. The Italians, though, fought back after a penalty and a converted try from Giacomo De Santis.
Two penalties from Paolo Pescetto brought the hosts back into contention, but tries from James Botham, Rey Lee-Lo and Harri Millard’s late score wrapped things up.
Elsewhere in Pool 4, Premiership leaders Bristol ran in eight tries to thrash Zebre 59-21, with fly-half Ioan Lloyd chalking up 22 points on his first start.
The Bears fell behind early on to a converted try from Mattia Bellini, but then never looked back, adding five of their own before the break.
Academy duo Charlie Powell and Andy Uren were also among the try-scorers late on.