Exeter Chiefs powered to their 11th successive victory in the Championship against Cornish Pirates at Sandy Park on Saturday.
The result reinforces the Chiefs' position at the top of the table, where they are now 11 points clear.
Paul McKenzie, Richie Baxter and Brett Sturgess were the try scorers for the Chiefs, with fly-half Gareth Steenson adding the extras.
All the Pirates' points came from the boot of fly-half Rob Cook.
The seven-point margin of victory ensured that the Pirates picked up a losing bonus point.
Exeter Chiefs prop Chris Budgen told BBC Spotlight:
Budgen thrilled by derby victory
"They had a few injuries up front and so we thought that was one of their weaknesses, so we tried to dominate it and get us on the front foot.
"It was a typical local derby, two south west teams going head to head and we just wanted to go out and win the game.
"We've got a two-week break now from the Championship, and we've achieved our goal in that we didn't want to lose and now we've got to focus on the British & Irish Cup."
Cornish Pirates high performance manager Chris Stirling told BBC Spotlight:
Stirling disappointed by defeat
"I'm bitterly disappointed. We had three tries scored against us and we didn't get any ourselves so it just wasn't good enough.
"One of their tries was a good try, but the other two were just a lack of concentration, so I'm really disappointed.
"We were in that game for long periods of time, but we couldn't get our hands on the ball in the second-half and a couple of loose kicks opened the door for Exeter."