COUNTY CALL-UP: Barnstaple fly-half Neil Giddy.
Barnstaple fly-half Giddy played a key role in Devon's 13-11 win at Okehampton last year, making two try-saving tackles.
Bideford full-back Schofield's call-up is reward for his prolific form this season. The speedy youngster has 17 tries to his name.
They are joined in the 24-man squad by front-row Sam Roberts who is on loan at Barnstaple from Cornish All Blacks.
Plymouth Albion fly-half Max Venables, who had a brief loan spell with Barum last season, is also involved.
Sunday's match will be played at St Ives, kicking off at 3pm.
Devon: Paul Creek, Jamie Tripcony, Alex Jeffery (all Newton Abbot); Mark Manton, Jordan Petty, Rupert Freestone, Declan McDonald, Tom Kessell, Max Venables (all Plymouth Albion); Russell Morris, Gus Hogg, Owain Lloyd (all Plymouth University); Sam Roberts, Nathan Hannay, Lewis Paterson (all Cornish All Blacks); Luke Maggs, Corrie Moore, Kyle Brown (all Brixham); Duncan Law (Tavistock); Neil Giddy (Barnstaple); Harry Chesterton (Sidmouth); Rob Hockeday (Exeter University); Mark Schofield (Bideford); Dan Force (Teignmouth).