Derbyshire sign Scotland left-arm spinner Mark Watt for all formats in the 2019 county season.
Derbyshire sign Australia fast bowler Kane Richardson for their 2019 T20 Blast campaign.
Daryl Mitchell warns there must be a clear divide between English counties and the new city-based teams in The Hundred.
Yorkshire sign South Africa fast bowler Duanne Olivier on a three-year Kolpak deal, putting his international career on hold.
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