London Welsh eased to their second European victory as they ran in nine tries on their way to completing the double over Italian side I Cavalieri Prato with a 62-5 success at the Kassam Stadium.
The hosts left it late to win the reverse victory at the Stadio Enrico back in October but they were straight out of the blocks on home turf with a Lee Becch try after seven minutes. Alex Davies added the extras with the boot, then edged his side further in front with a penalty.
Hooker Daniel George grabbed his side's second converted try and he was then followed over the line by Jason Lewis.
The hosts completed a dominant first forty minutes by collecting the bonus point score before the break with Tom Arscott touching down.
Alfonso Damiani made up for his first-half yellow card with the first points of the second half, as he crossed for I Cavalieri Prato's opening score.
That sparked Welsh back into action and they scored two tries in quick succession to regain the momentum.
Davies grabbed the first and converted his own score and Phillip Mackenzie followed him over the line for another seven points.
Full back Arscott collected his brace as the game entered the final quarter but Lyn Jones' side still had time to run in two more scores and round off the comprehensive victory.
First Ashley Smith scored with six minutes to go then Mike Hill completed the scoring with Welsh's ninth try.