An impressive display from Saracens allowed them to run out 45-10 winners over Oyonnax in their European Champions Cup group.
Tries from Alex Goode, Chris Wyles, Maro Itoje, Richard Wigglesworth and Schalk Brits saw the visitors run up the score after a 23-3 lead at the break.
Owen Farrell also kicked 13 points for Saracens with Arthur Aziz scoring Oyonnax's sole try late on.
The victory leaves Saracens nine points clear at the top of Pool 1, with Oyonnax staying bottom on one point.