The Exeter Chiefs have made a terrific start the the Premiership rugby season but face an acid test of their credentials as league leaders Saracens visit Sandy Park.
The Londoners may well be buoyed by the return of their England stars from international duty but the Chiefs will look to last season's home victory against Saracens as proof that England's current top team is beatable.
Rob Baxter's men will be back to a full strength first team after last week's defeat at Bath in the LV Cup.
Their last league outing at Sandy Park saw the Chiefs demolish Worcester and they currently sit fourth in the Aviva Premiership table.
On Sunday, the Cornish Pirates welcome Bristol to the Mennaye Field in Penzance. The Pirates edged a thrilling meeting between the two sides on the opening day of the season at Exeter's Sandy Park. The Cornishmen are also unbeaten at the Mennaye against Bristol since 2004.
In League Two football there are away games for Torquay at Accrington, where victory for the Gulls will see them climb out of the relegation zone.
Across Devon, Exeter City go to Rochdale looking to arrest their recent slump in form.
Plymouth Argyle are home to Dagenham and Redbridge after a confidence boosting 5-0 victory in their FA Cup first round replay against Lincoln on Wednesday. In-form striker Reuben Reid will hope to be amongst the goals once more after scoring a hat trick against the Conference side.