Batsman Graham Clark signs a contract extension with Durham that expires at the end of the 2021 season.
Right-arm seamer Ivan Thomas signs a two-year extension to his contract at Kent.
Durham batsman Cameron Steel signs a contract extension to keep him with the county until the end of the 2021 season.
Ex-Durham, Worcestershire and Australia all-rounder John Hastings retires with a lung condition causing him to cough up blood.
Audio & Video
England spinner Jack Leach talks to BBC Points West about his journey in cricket, from a trip to Taunton as a newborn to his Test recall.
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How to get into cricket
How to get into cricket - physical exertion with a chess-like element in matches which range from half an hour to five days.