Luca Scassa has taken his second consecutive World Supersport Championship victory as he led a ParkinGO Yamaha 1-2 at Donington Park.
The Italian led from start-to-finish after escaping at the lights from pole position, Scassa resisting the race-long attentions of Chaz Davies as they recorded Yamaha's first top-two lock-out at this level since Misano 2007.
A far calmer route to victory for Scassa than at Phillip Island, though Davies never let him get a significant gap on him at any stage in the race, the Welshman's attempts at snatching the lead were limited to a failed effort on the final lap at Redgate.
They may have faced a bigger challenge had Sam Lowes not been forced to retire, the Parkalgar Honda rider setting a fierce pace as he battled his way back into contention following a poor start.
The youngster was up to third and lapping faster than those ahead when he suddenly slowed with technical issues on the CBR600RR on lap twelve.
Leaving James Ellison to inherit the position, there was further disappointment for the PTR fold after the Bogdanka machine also developed a problem a dropped him down the order during the closing stages. He would be forced to retire with one lap remaining.
Instead, Gino Rea – who has been suffering with his thumb injury all weekend - followed up his run to the podium at Silverstone to claim a second home rostrum, the Step Racing Honda rider prevailing in a tussle with Robbin Harms after the Dane ran off the circuit at Coppice.
Harms recovered to fourth for his best Supersport finish in three years, ahead of Kawasaki trio Broc Parkes, David Salom and Massimo Roccoli, the ZX-6R struggling to stay with the Yamahas and Hondas in the race.
Florian Marino was eighth on the sole Ten Kate Honda, ahead of Vittorio Iannuzzo on the second of the Lorenzini Kawasakis, while Alexander Lundh completed the top ten.
Elsewhere, Miguel Praia was the only one of five PTR riders to reach the finish in 11th, ahead of Roberto Tamburini, Ondrej Jezek, Balazs Nemeth and Marko Jerman, the latter proving the only scoring Triumph rider.