Undeterred, Laverty maintained close contact with Melandri until lap twenty when he dived up the inside at turn four. Going on to smash the lap record with a time 1min 31.168secs – four tenths faster than anyone else had managed at that point – Laverty quickly found himself back on Guintoli's tail and would waste no time in planting his move, scything by into turn one at the start of the penultimate lap.
Immediately establishing a gap between himself and the race one winner, Laverty would proceed to hold firm over the final two laps to pick up his second victory as an Aprilia rider and his fourth in World Superbikes.
Behind Guintoli, Melandri had to make do with third, though he was fortunate not to be usurped by Michel Fabrizio
on the final lap, the race one podium winner mounting a late challenge that would almost take him all the way to the rostrum again.
Further back, Sykes was once again able to recover from a mid-race lull to grab fifth by the chequered flag, ahead of Giugliano and Cluzel, the Frenchman impressing on his first weekend as a WSBK rider after a weekend of technical disruptions.
By contrast, Jonathan Rea's landmark 100th WSBK race was an unhappy one as he struggled for competitiveness on the Pata Honda once again, the Ulsterman well down the order in eighth place.
Fighting back from their opening lap delays, Camier would get the better of Haslam on the line as the duo recovered to round out the top ten.
Behind them, Max Neukirchner took the sole remaining Ducati 1199R to more good points in 11th place, ahead of wild-card riders Glenn Allerton and Jamie Stauffer, while Pedercini Kawasaki pair Federico Sandi and Alexander Lundh picked up the final points in 14th and 15th.