Jonny Wilkinson's replacement, Toby Flood, scored 20 points as Newcastle Falcons opened their European campaign with a 50-3 victory at Kingston Park as the 2006/7 European Challenge Cup got underway...
Flood opened the scoring with an early penalty goal, before converting England hopeful Mathew Tait's try to give his side a 10-0 lead that never looked in danger.
Backrower Mike McCarthy and winger John Rudd chimed in with tries before Petrarca bothered the scoreboard attendants with an try from huge Fijian backrower Sisa Koyamaibole.
Rudd bagged his second, and Tait also completed a brace to give the Falcons a match-winning 31-5 lead at halftime.
In Ireland, an injury-time penalty goal from Adrian Jarvis gave Harlequins a nail-biting win at the Sportsground.
Jarvis, replacing injured All Black legend Andrew Mehrtens, kicked four penalty goals and the extras to Tom Williams' try as the London side sneaked home 19-18.
Connacht inside centre John Hearty opened the scoring with a try in the eighth minute, converted by Paul Warwick, but three penalty goals from Jarvis gave the London visitors a one-point match at the break.
Winger Williams scored early in the second half, but a try from home backrower Colm Rigney gave his side the lead before Jarvis' 82-minute heroics.
In Newport, the Dragons stamped their mark on the competition with a dominant50-3 victory over French club Bayonne.
Ceri Sweeney edged his side ahead with an eighth-minute penalty goal, before former Wales skipper Michael Owen powered over for a try on the quarter mark to give the home team a handy 10-0 lead.
Sweeney banged over two penalty goals before an increasingly desperate French side found their way on to the scoreboard with a Jon Iturriria dropped goal.
Visiting lock Cedric Bergez and home second-rower Ian Gough were sent to the bin for excessive force at the ruck in the 34th minute, and Bayonne went down to 13 men when hooker Arnaud Heguy was shown the yellow card.
Two more Sweeney goals, the second a conversion of a penalty try, gave the Dragons a healthy 26-3 lead at the break, and Wales scrum-half Gareth Cooper's early second-half try put the match beyond doubt.
Tries to winger Richard Fussell, backrower Nic Fitesemanu and replacement Mike Hercus simply added to the French side's woes.
In France, Brive beat Montauban 26-13 on the back of three second-half penalty goals from Italian international Luciano Orquera.
Montauban prop Avtandil Kopaliani, a Georgia international, gave the home side an early lead with a try, but his opposite front-rower, Romanian Test star Petrisor Toderasc, leveled the scores before centre Nicolas Couttet crossed and Orquera found his range.