County Championship Division One winners Durham have agreed contract extensions with Gordon Muchall and Gareth Breese.
Batsman Muchall, 30, has extended his deal until the end of the 2015 season while 37-year-old all-rounder Breese will remain at the county for a further year.
Meanwhile, Australia-born seamer Callum Thorp has been released along with former captain Will Smith, who has already joined Hampshire.
In a statement, the club thanked both players for their service.
"Durham would like to wish both players the best with their futures and thank them for the valuable contribution they have made in their time at the club," it read.