Factory Yamaha's Eugene Laverty has completed his first World Superbike double at Monza, grabbing the second race win in the last corner as leader and team-mate Marco Melandri ran wide into the parabolica and the young Irishman slid underneath to win the run to the line.
Laverty, who cruised to the first race win earlier on, crossed the line three-tenths ahead of the Italian but it was a race of crashes and penalties as runaway leader Max Biaggi was given a ride-through with five laps to go for cutting Primo Variante and using it to increase his laptime.
Save for Laverty's success, it was not a good race for the British contingent. Castrol Honda's Jonathan Rea was nerfed by Carlos Checa into the first chicane as the Spaniard went right across the kerb. Rea went down and took Leon Haslam with him and then the BMW skittled Jakub Smrz.
The melee saw Leon Camier promoted to fourth as Laverty got sucked down into ninth place and had to fight his way through the pack as Biaggi got his head down to chase leader Troy Corser.
The Italian was leading by the start of lap two as Camier went past Haga into Primo Variante but forced the Samurai of Slide to go straight on, much to Haga's annoyance. Camier was second a lap later and set off in pursuit of his team mate.
It wasn't to be for the lanky Kent youngster, however, as he lost the front going into Lesmo 2 with 11 laps to go but was unhurt in the fall. Biaggi had a five second lead but then made his error and was called in for his ride-through, leaving Laverty and Melandri to scrap for the lead.
With a couple of laps to go, Laverty had a couple of looks past his team leader but allowed the former 250GP champ to maintain the advantage until the final turn - it was almost as if Laverty knew he would go in too hot. Melandri went down too many gears and locked the rear, leaving the door wide open.
Haga and Michel Fabrizio went at it for the final podium spot, swapping places and paint but the Italian nicked it by a little over a tenth of a second with Corser finishing in fifth.