Exeter Chiefs claimed a bonus-point victory over Ospreys in the opening round of the LV= Cup.
A penalty try from a collapsed scrum got the home side on their way, and prop John Andress claimed the second touchdown 10 minutes from the break.
Centre Phil Dollman and replacement centre Josh Tatupu added late tries to secure maximum points.
Ospreys, who have won all six Pro12 League games this season, had to settle for three Matthew Morgan penalties.
Exeter: Nowell; Foster, Dollman, Rennie, Sestaret; Steenson, Barrett; Moon, Alcott, Andress, Bentley, Phillips, Ewers, White, Slade.
Replacements: Dorrian for Nowell (61), Tatupu for Rennie (54), Phibbs for Barrett (50), Clark for Alcott (56), Fairbrother for Andress (74), Muldowney for White (63), Walker-Blair for Slade (54).
Not Used: Rogers.
Ospreys: B. Davies; E. Walker, John, Parker, Phillips; Morgan, Habberfield; Griffiths, Baldwin, Rees, Smith, Kelly, King, Lewis, Allan.
Replacements: R. Jones for B. Davies (53), Price for Phillips (68), Grabham for Habberfield (61), Cross for Griffiths (68), M. Davies for Baldwin (61), Jarvis for Rees (44), Peers for Kelly (61), B. Thomas for Lewis (49).
Ref: David Rose (RFU).