PLYMSTOCK have lost two key players in opening batsman Dom Wood and bowling all-rounder Dave Orchard.
Wood has returned to London with work and has thoughts of taking time away from cricket to spend more time on the golf course.
Orchard has moved to Hampshire and will be playing his cricket elsewhere this term.
Dave Petherbridge, last years signing from Cornwood, has recently had an operation on an arm and looks set for a season on the sidelines.
George Barnicott is still recovering from his heart issues and may not be fit for a few weeks yet.
In coming Plymstock have all-rounder Nick Carter, who has come across from the Cornwall league and looks a handy player.
The other addition is an overseas seamer from St Lucia Bronte Bess, who will play against Dartington & Totnes on Saturday.
After missing out on promotion on the final day last season, Plymstock will be disappointed not to be up there again.
“This year we have plenty of competition for places, which can only be a positive and means players will know they are fighting for their own place in the side, so performances will hopefully reflect that,” said Mansfield.
“Most teams in the B have been there for a few years now so we know what to expect.
“It'll be interesting to see what prompted side Dartington are like.
“There have been number of teams recently have managed to go from the C to the B and follow that up with promotion to the A so we know teams that do come up have something about them.”