Scott Swann celebrated his maiden Superstock win at Knockhill after beating Davey Todd by more than a second.
Swann led from the opening lap and quickly edged himself a lead at the front, extending it further across the 18 lap race to eventually win by 1.473secs.
Todd was second, more than two seconds clear of Joe Talbot as Ash Beech took fourth and David Allingham fifth.
Pirelli National Superstock with Moneybarn Finance, Race One result:
1. Scott Swann (Swann Racing)
2. Davey Todd (Cheshire Mouldings BMW by TAS Racing) +1.473s
3. Joe Talbot (SAF INTRADISC Honda by JR Performance) +3.753s
4. Ash Beech (Jones Dorling Racing) +5.627s
5. David Allingham (SMS/Nicholls Oil Racing) +9.878s