Bucharest Wolves won their second group match of the season when Florin Vlaicu held his nerve to land a 79th minute penalty and snatch a 25-22 victory over Agen at Arcul de Triumf.
After beating Cammi Rugby Calvisano in Round 2 they made it back-to-back home wins and condemned Agen to a sixth defeat in their last eight tournament matches.
The Wolves got off to an absolute flier with right wing Ionut Botezatu crossing the Agen line after just two minutes while it took Agen all but the rest of the half to match them with a try of their own.
Powerful No 8 Opeti Fonua did the business with a 39th minute try, Mathieu Lamoulie and Mike Wiringi exchanging penalty goals for the sides to go into the break all level at eight points apiece and everything to play for in the second period.
There was more of the same from the Romanian side at the start of the second half as they again struck with just a few minutes on the clock.
Full back Catalin Fercu's try was converted by Wiringi - and there was even more joy for the home fans 10 minutes later when centre Cristian Dinis snapped up their third try.
With tempers threatening to boil over and both teams reduced to 14 men for 10 minutes left wing Belisario Agulla brought Agen right back into it with their second try and when prop Tura Turashvili became the second Wolves player sent to the sin bin a penalty try converted by Lamoulie leveled matters at 22-22 with just five minutes left on the clock.
But the Wolves were not to be denied and Florin Vlaicu sealed the four points with just a minute remaining.