Derbyshire have signed South Africa seamer Duanne Olivier as their overseas player for the first half of the 2018 season.
Derbyshire have signed New Zealand spinner Mitchell Santner as an overseas player for the second half of the 2018 season.
Essex will open their County Championship title defence with a tough trip to Yorkshire, the team they succeeded as champions.
Away from the England men's team, we take a look back at some of the other cricketing highlights of 2017...
Derbyshire have terminated the contract of Shiv Thakor after he was found guilty of indecently exposing himself to two women.
Derbyshire have signed former West Indies fast bowler Ravi Rampaul from Surrey
on a three-year contract.
Essex defy the odds to romp to the County Championship title, beating Lancashire into second, but Durham's troubles persist.
Derbyshire all-rounder Shiv Thakor will appear in court next month facing charges of two counts of sexual exposure.
Nottinghamshire's hopes of promotion from County Championship Division Two are in the balance as Sussex dominate day two at Hove.
Joe Clarke helped Worcestershire overcome a stuttering start as they look to secure promotion to County Championship Division One.
Steve Finn swelled Middlesex's hopes of avoiding relegation by taking 8-79 in a 36-run win over Lancashire at Lord's.
Rory Kleinveldt bagged 9-65 for Northants in the Championship, while Surrey's Kumar Sangakkara scored yet another century.
Warwickshire were relegated to County Championship Division Two as Somerset beat Lancashire to boost their own survival bid
Somerset are closing in on a crucial victory in their fight for County Championship Division One survival.
Essex edged closer to the County Championship title after making a strong start to their match against Warwickshire at Edgbaston.
Chris Read's final game for Nottinghamshire at Trent Bridge ended in defeat, while Warwickshire edged closer to relegation.
Haseeb Hameed missed out on a first Championship hundred of 2017, while Notts' unbeaten run is in jeopardy at Trent Bridge.
Ben Duckett creamed 193 for Northants in the County Championship but rain blighted much of day one elsewhere.
It's that time again; the biggest race of the year! Find out who comes out in top in the 2017 Mascot Race...
Ravichandran Ashwin took 5-68 on debut as Worcestershire beat Gloucestershire by 189 runs at New Road.
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