Boston's Ben Wilson took victory in both races in round nine of the British Supersport championship at his home circuit of Cadwell Park.
The Gearlink Kawasaki rider started both races from pole and twice headed his arch-rival Aistair Seeley home to extend his series lead to 53 points.
"We did the job we intented to do," Wilson told BBC Lincolnshire.
"Alistair found some extra pace and it was difficult for us but we got the points in the bag."
In Superbikes Louth's Peter Hickman, who finished eighth on sunday in a race rescheduled after being postponed at Oulton Park earlier in the season, claimed a brace of fifth places on the Tyco Honda.
"Both races went well," said Hickman. "Had I got a better start, I might have got on the podium.
"But I was really happy to be able to stay with riders of that calibre. They're all race winners on factory bikes and at the end of the day we're a privateer team so to be stuck on the back of the group, and comfortably so as well, was good."
However, it was a frustrating weekend for Lincoln's Alex Lowes who was 12th for MSS Kawasaki in Sunday's race and crashed out of both races on Monday.
Swan Yamaha's Tommy Hill took a double victory while Shane Byrne finished third and fourth for Louth's HM Plant Honda team with his team-mate and defending champion Ryuichi Kiyonari clinching his place in the end-of-season showdown with ninth and seventh places.
But the meeting was overshadowed by the death of Ben Gautrey, 18, who died following a crash involving five riders on the opening lap of the Superstock 600 race.