Derbyshire sack all-rounder Shiv Thakor after he was found guilty of two sexual exposure charges.
Derbyshire escape punishment over the loss of their four-day Championship game with Kent at Chesterfield in September.
Warwickshire reappoint Leicestershire's Graeme Welch as bowling coach following Alan Richardson's departure.
Derbyshire sign former West Indies seam bowler Ravi Rampaul from Surrey on a three-year contract.
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Hampshire's Shahid Afridi hits the fastest T20 Blast hundred of 2017 from 42 balls during his side's crushing 101-run quarter-final win over Derbyshire.
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How to get into cricket - physical exertion with a chess-like element in matches which range from half an hour to five days.