Worcester started their European Challenge Cup campaign by running in nine tries in a 57-14 rout of Russian club Enisei-STM.
Fly-half Jamie Shillcock grabbed a hat-trick of tries and kicked six conversions as the Premiership club made a flying start to their Pool One campaign in Krasnoyarsk.
Richard Palframan, Nick David, Shillcock, Jono Kitto and Joe Morris all scored first-half tries as the Worcester led 31-0 at the break.
Justin Clegg added another before Shillcock scored two tries in the space of nine minutes to complete his hat-trick, while the try-scoring was completed by Gareth Simpson late on.
Forwards Uldis Saulite and Dmitrii Krotov touched down for the hosts in the second half.
Edinburgh also started their campaign with a bonus-point win on the road as they beat Agen 31-10 in Pool Three.
George Taylor’s first-half brace and a Damien Hoyland try – all three converted by Simon Hickey – saw Edinburgh make a fine response to Thomas Vincent’s early penalty for the French side.
Masilevu scored a try for Agen in the 56th minute but hooker Cameron Fenton sealed Edinburgh’s bonus-point score in the last minute.
Elsewhere on the opening night of the competition, replacement Anthony Etrillard’s 75th-minute try rounded off a 20-13 win for Toulon at fellow Top 14 side Bayonne.
The visitors outscored Bayonne four tries to one in the Pool Two clash but they failed to land any conversions.
Marcel Van Der Merwe’s first-half brace put them 10-6 up at the interval but Peyo Muscarditz’s converted try gave the hosts the advantage early in the second.
Julian Savea touched down to give Toulon a two-point lead before Etrillard crossed against his former club.
In another all-French clash, Brive ran out 27-11 winners at Stade Francais in Pool Four.
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