Sunday April 10 – April 13
Durham v Somerset, Riverside Ground, Chester-le-Street
Hampshire v Warwickshire, The Rose Bowl, Southampton
Nottinghamshire v Surrey, Trent Bridge, Nottingham
Sunday April 17 – Wednesday April 20
Lancashire v Nottinghamshire, Old Trafford, Manchester
Middlesex v Warwickshire, Lord’s, London
Yorkshire v Hampshire, Headingley, Leeds
Sunday April 24 – Wednesday April 27
Durham v Middlesex, Riverside Ground, Chester-le-Street
Surrey v Somerset, Kennington Oval, London
Warwickshire v Yorkshire, Edgbaston, Birmingham
Sunday May 1 – Wednesday May 4
Hampshire v Middlesex, The Rose Bowl, Southampton
Nottinghamshire v Yorkshire, Trent Bridge, Nottingham
Somerset v Lancashire, County Ground, Taunton
Surrey v Durham, Kennington Oval, London
Sunday May 8 – Wednesday May 11
Lancashire v Hampshire, Old Trafford, Manchester
Middlesex v Nottinghamshire, Lord’s, London
Warwickshire v Somerset, Edgbaston, Birmingham
Yorkshire v Surrey, Headingley, Leeds
Sunday May 15 – Wednesday May 18
Durham v Lancashire, Riverside Ground, Chester-le-Street
Nottinghamshire v Warwickshire, Trent Bridge, Nottingham
Somerset v Yorkshire, County Ground, Taunton
Surrey v Middlesex, Kennington Oval, London
Sunday May 22 – Wednesday May 25
Hampshire v Nottinghamshire, The Rose Bowl, Southampton
Lancashire v Surrey, Old Trafford, Manchester
Middlesex v Somerset, Lord’s, London
Warwickshire v Durham, Edgbaston, Birmingham
Saturday May 28 – Tuesday May 31
Nottinghamshire v Durham, Trent Bridge, Nottingham
Somerset v Surrey, County Ground, Taunton
Sunday May 29 – Wednesday June 1
Middlesex v Hampshire, Venue TBC
Yorkshire v Lancashire, Headingley, Leeds
Sunday June 19 – Wednesday June 22
Surrey v Nottinghamshire, Kennington Oval, London
Monday June 20 – Thursday June 23
Durham v Yorkshire, Riverside Ground, Chester-le-Street
Lancashire v Warwickshire, Old Trafford, Manchester
Sunday Jun 26 – Wednesday June 29
Hampshire v Somerset, The Rose Bowl, Southampton
Middlesex v Lancashire, Lord’s, London
Warwickshire v Nottinghamshire, Edgbaston, Birmingham
Saturday July 2 – Tuesday July 5
Surrey v Warwickshire, Woodbridge Road, Guildford
Sunday July 3 – Wednesday July 6
Durham v Hampshire, Riverside Ground, Chester-le-Street
Nottinghamshire v Lancashire, Trent Bridge, Nottingham
Yorkshire v Middlesex, North Marine Road Ground, Scarborough
Sunday July 10 – Wednesday July 13
Somerset v Middlesex, County Ground, Taunton
Warwickshire v Hampshire, Edgbaston, Birmingham
Monday July 11 – Thursday July 14
Surrey v Yorkshire, Kennington Oval, London
Saturday July 16 – Tuesday July 19
Lancashire v Durham, Trafalgar Road Ground, Southport
Sunday July 17 – Wednesday July 20
Hampshire v Surrey, The Rose Bowl, Southampton
Nottinghamshire v Somerset, Trent Bridge, Nottingham
Thursday August 4 – Sunday August 7
Hampshire v Lancashire, The Rose Bowl, Southampton
Middlesex v Surrey, Lord’s, London
Somerset v Durham, County Ground, Taunton
Yorkshire v Warwickshire, Headingley, Leeds
Saturday August 13 – Tuesday August 16
Lancashire v Yorkshire, Old Trafford, Manchester
Middlesex v Durham, Lord’s, London
Nottinghamshire v Hampshire, Trent Bridge, Nottingham
Warwickshire v Surrey, Edgbaston, Birmingham
Tuesday August 23 – Friday August 26
Durham v Warwickshire, Riverside Ground, Chester-le-Street
Somerset v Hampshire, County Ground, Taunton
Surrey v Lancashire, Kennington Oval, London
Yorkshire v Nottinghamshire, North Marine Road Ground, Scarborough
Wednesday August 31 – Saturday September 3
Durham v Nottinghamshire, Riverside Ground, Chester-le-Street
Hampshire v Yorkshire, The Rose Bowl, Southampton
Lancashire v Somerset, Old Trafford, Manchester
Warwickshire v Middlesex, Edgbaston, Birmingham
Tuesday September 6 – Friday September 9
Nottinghamshire v Middlesex, Trent Bridge, Nottingham
Somerset v Warwickshire, County Ground, Taunton
Surrey v Hampshire, Kennington Oval, London
Yorkshire v Durham, Headingley, Leeds
Monday September 12 – Thursday September 15
Durham v Surrey, Riverside Ground, Chester-le-Street
Lancashire v Middlesex, Old Trafford, Manchester
Yorkshire v Somerset, Headingley, Leeds
Tuesday September 20 – Friday September 23
Hampshire v Durham, The Rose Bowl, Southampton
Middlesex v Yorkshire, Lord’s, London
Somerset v Nottinghamshire, County Ground, Taunton
Warwickshire v Lancashire, Edgbaston, Birmingham