David Shoubridge moved into the championship lead with a second win of the weekend as he beat former champ Phil Atkinson by almost 10 seconds.
Taking the lead on the third lap after a mistake from early leader Blaze Baker, Shoubridge soon checked out at the front to bring his Rich Energy Ducati home 9.089s clear of Atkinson.
Adon Davie was third, a further five seconds down with Max Lofthouse fourth and Baker fifth. Tom Tunstall, who had led the points before the race, was sixth.
Ducati Performance TriOptions Cup, Cadwell Park, Race Two:
1. David Shoubridge (Rich Energy Ducati)
2. Phil Atkinson (Q-Oil Treatments/Unique Motorsport) +9.089s
3. Adon Davie (JDF Racing) +14.883s
4. Max Lofthouse (JDF Racing) +15.119s
5. Blaze Baker (Trackdemons Racing powered by HMY) +16.661s
Championship positions after Round 10
1. David Shoubridge 195
2. Tom Tunstall 182
3. Blaze Baker 122
4. Max Lofthouse 103
5. Adon Davie 93