| Round 1 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Worcestershire | Wor | Rose Bowl | Rose Bowl | 13 Apr 2018, 08:00 pm | View | Ham Won |
| Lancashire | Lan | Nottinghamshire | Not | Old Trafford | Old Traf | 13 Apr 2018, 08:00 pm | View | Not Won |
| Yorkshire | Yor | Essex | Ess | Headingley | Leeds | 13 Apr 2018, 08:00 pm | View | Abandoned |
| Kent | Ken | Gloucestershire | Glo | St Lawrence Ground | St Law | 13 Apr 2018, 08:00 pm | View | Glo Won |
| Middlesex | Mid | Northamptonshire | Nth | Lords | Lords | 13 Apr 2018, 08:00 pm | View | Mid Won |
| Warwickshire | War | Sussex | Sus | Edgbaston | Edgb | 13 Apr 2018, 08:00 pm | View | Drawn |
| Bye: Derbyshire, Durham, Glamorgan, Surrey, Somerset, Leicestershire | ||||||||
| Bye: Der, Dur, Gla, Sur, Som, Lei | ||||||||
| Round 2 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Essex | Ess | Lancashire | Lan | County Ground | Chelms | 20 Apr 2018, 08:00 pm | View | Ess Won |
| Somerset | Som | Worcestershire | Wor | County Ground | Taunton | 20 Apr 2018, 08:00 pm | View | Som Won |
| Surrey | Sur | Hampshire | Ham | The Oval | The Oval | 20 Apr 2018, 08:00 pm | View | Sur Won |
| Yorkshire | Yor | Nottinghamshire | Not | Headingley | Leeds | 20 Apr 2018, 08:00 pm | View | Yor Won |
| Derbyshire | Der | Middlesex | Mid | County Ground | Derby | 20 Apr 2018, 08:00 pm | View | Der Won |
| Durham | Dur | Kent | Ken | Riverside Ground | Durham | 20 Apr 2018, 08:00 pm | View | Ken Won |
| Gloucestershire | Glo | Glamorgan | Gla | County Ground | Bristol | 20 Apr 2018, 08:00 pm | View | Gla Won |
| Leicestershire | Lei | Sussex | Sus | Grace Road | Leice | 20 Apr 2018, 08:00 pm | View | Drawn |
| Northamptonshire | Nth | Warwickshire | War | County Ground | Northam | 20 Apr 2018, 08:00 pm | View | War Won |
| Round 3 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Essex | Ess | Rose Bowl | Rose Bowl | 27 Apr 2018, 08:00 pm | View | Drawn |
| Lancashire | Lan | Surrey | Sur | Old Trafford | Old Traf | 27 Apr 2018, 08:00 pm | View | Drawn |
| Somerset | Som | Yorkshire | Yor | County Ground | Taunton | 27 Apr 2018, 08:00 pm | View | Som Won |
| Worcestershire | Wor | Nottinghamshire | Not | New Road | Worc | 27 Apr 2018, 08:00 pm | View | Not Won |
| Leicestershire | Lei | Derbyshire | Der | Grace Road | Leice | 27 Apr 2018, 08:00 pm | View | Drawn |
| Middlesex | Mid | Glamorgan | Gla | Lords | Lords | 27 Apr 2018, 08:00 pm | View | Drawn |
| Northamptonshire | Nth | Durham | Dur | County Ground | Northam | 27 Apr 2018, 08:00 pm | View | Abandoned |
| Sussex | Sus | Gloucestershire | Glo | County Ground | Hove | 27 Apr 2018, 08:00 pm | View | Drawn |
| Bye: Kent, Warwickshire | ||||||||
| Bye: Ken, War | ||||||||
| Round 4 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Warwickshire | War | Derbyshire | Der | Edgbaston | Edgb | 03 May 2018, 08:00 pm | View | War Won |
| Essex | Ess | Yorkshire | Yor | County Ground | Chelms | 04 May 2018, 08:00 pm | View | Yor Won |
| Lancashire | Lan | Somerset | Som | Old Trafford | Old Traf | 04 May 2018, 08:00 pm | View | Drawn |
| Nottinghamshire | Not | Hampshire | Ham | Trent Bridge | Trent Brid | 04 May 2018, 08:00 pm | View | Not Won |
| Surrey | Sur | Worcestershire | Wor | The Oval | The Oval | 04 May 2018, 08:00 pm | View | Drawn |
| Durham | Dur | Leicestershire | Lei | Riverside Ground | Durham | 04 May 2018, 08:00 pm | View | Dur Won |
| Glamorgan | Gla | Kent | Ken | Sophia Gardens | Cardiff | 04 May 2018, 08:00 pm | View | Ken Won |
| Sussex | Sus | Middlesex | Mid | County Ground | Hove | 04 May 2018, 08:00 pm | View | Sus Won |
| Bye: Northamptonshire, Gloucestershire | ||||||||
| Bye: Nth, Glo | ||||||||
| Round 5 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Nottinghamshire | Not | Lancashire | Lan | Trent Bridge | Trent Brid | 11 May 2018, 08:00 pm | View | Lan Won |
| Somerset | Som | Hampshire | Ham | County Ground | Taunton | 11 May 2018, 08:00 pm | View | Drawn |
| Surrey | Sur | Yorkshire | Yor | The Oval | The Oval | 11 May 2018, 08:00 pm | View | Sur Won |
| Worcestershire | Wor | Essex | Ess | New Road | Worc | 11 May 2018, 08:00 pm | View | Ess Won |
| Derbyshire | Der | Durham | Dur | County Ground | Derby | 11 May 2018, 08:00 pm | View | Drawn |
| Kent | Ken | Sussex | Sus | St Lawrence Ground | St Law | 11 May 2018, 08:00 pm | View | Ken Won |
| Leicestershire | Lei | Glamorgan | Gla | Grace Road | Leice | 11 May 2018, 08:00 pm | View | Lei Won |
| Middlesex | Mid | Gloucestershire | Glo | Lords | Lords | 11 May 2018, 08:00 pm | View | Drawn |
| Warwickshire | War | Northamptonshire | Nth | Edgbaston | Edgb | 11 May 2018, 08:00 pm | View | War Won |
| Round 6 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Surrey | Sur | Rose Bowl | Rose Bowl | 09 June 2018, 08:00 pm | View | Sur Won |
| Lancashire | Lan | Essex | Ess | Old Trafford | Old Traf | 09 June 2018, 08:00 pm | View | Ess Won |
| Somerset | Som | Nottinghamshire | Not | County Ground | Taunton | 09 June 2018, 08:00 pm | View | Som Won |
| Durham | Dur | Derbyshire | Der | Riverside Ground | Durham | 09 June 2018, 08:00 pm | View | Dur Won |
| Gloucestershire | Glo | Kent | Ken | County Ground | Bristol | 09 June 2018, 08:00 pm | View | Drawn |
| Northamptonshire | Nth | Leicestershire | Lei | County Ground | Northam | 09 June 2018, 08:00 pm | View | Lei Won |
| Warwickshire | War | Glamorgan | Gla | Edgbaston | Edgb | 09 June 2018, 08:00 pm | View | War Won |
| Bye: Middlesex, Sussex, Worcestershire, Yorkshire | ||||||||
| Bye: Mid, Sus, Wor, Yor | ||||||||
| Round 7 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Essex | Ess | Nottinghamshire | Not | County Ground | Chelms | 20 June 2018, 08:00 pm | View | Not Won |
| Surrey | Sur | Somerset | Som | Woodbridge Road | Guild | 20 June 2018, 08:00 pm | View | Sur Won |
| Worcestershire | Wor | Lancashire | Lan | New Road | Worc | 20 June 2018, 08:00 pm | View | Wor Won |
| Glamorgan | Gla | Derbyshire | Der | St Helen's | St H | 20 June 2018, 08:00 pm | View | Drawn |
| Kent | Ken | Warwickshire | War | TBD | TBD | 20 June 2018, 08:00 pm | View | Ken Won |
| Leicestershire | Lei | Middlesex | Mid | Grace Road | Leice | 20 June 2018, 08:00 pm | View | Mid Won |
| Sussex | Sus | Durham | Dur | Arundel Castle Ground | Arundel | 20 June 2018, 08:00 pm | View | Sus Won |
| Northamptonshire | Nth | Gloucestershire | Glo | County Ground | Northam | 20 June 2018, 10:30 pm | View | Nth Won |
| Hampshire | Ham | Yorkshire | Yor | Rose Bowl | Rose Bowl | 20 June 2018, 11:00 pm | View | Drawn |
| Round 8 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Yorkshire | Yor | Surrey | Sur | Queens | Queens | 25 June 2018, 08:00 pm | View | Sur Won |
| Glamorgan | Gla | Northamptonshire | Nth | Sophia Gardens | Cardiff | 25 June 2018, 08:00 pm | View | Nth Won |
| Lancashire | Lan | Hampshire | Ham | Old Trafford | Old Traf | 25 June 2018, 09:00 pm | View | Drawn |
| Derbyshire | Der | Leicestershire | Lei | County Ground | Derby | 25 June 2018, 10:30 pm | View | Lei Won |
| Essex | Ess | Somerset | Som | County Ground | Chelms | 25 June 2018, 11:00 pm | View | Drawn |
| Nottinghamshire | Not | Worcestershire | Wor | Trent Bridge | Trent Brid | 25 June 2018, 11:00 pm | View | Drawn |
| Durham | Dur | Warwickshire | War | Riverside Ground | Durham | 25 June 2018, 11:00 pm | View | War Won |
| Kent | Ken | Middlesex | Mid | St Lawrence Ground | St Law | 25 June 2018, 11:00 pm | View | Ken Won |
| Bye: Sussex, Gloucestershire | ||||||||
| Bye: Sus, Glo | ||||||||
| Round 9 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Gloucestershire | Glo | Sussex | Sus | College Ground | College | 16 July 2018, 08:00 pm | View | Sus Won |
| Lancashire | Lan | Yorkshire | Yor | Old Trafford | Old Traf | 22 July 2018, 08:00 pm | View | Yor Won |
| Nottinghamshire | Not | Surrey | Sur | Trent Bridge | Trent Brid | 22 July 2018, 08:00 pm | View | Sur Won |
| Worcestershire | Wor | Somerset | Som | New Road | Worc | 22 July 2018, 08:00 pm | View | Som Won |
| Derbyshire | Der | Northamptonshire | Nth | Queen's Park | QueenP | 22 July 2018, 08:00 pm | View | Der Won |
| Gloucestershire | Glo | Durham | Dur | College Ground | College | 22 July 2018, 08:00 pm | View | Glo Won |
| Kent | Ken | Leicestershire | Lei | St Lawrence Ground | St Law | 22 July 2018, 08:00 pm | View | Lei Won |
| Middlesex | Mid | Warwickshire | War | Lords | Lords | 22 July 2018, 08:00 pm | View | Mid Won |
| Sussex | Sus | Glamorgan | Gla | County Ground | Hove | 22 July 2018, 11:00 pm | View | Sus Won |
| Bye: Hampshire, Essex | ||||||||
| Bye: Ham, Ess | ||||||||
| Round 10 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Nottinghamshire | Not | Rose Bowl | Rose Bowl | 19 Aug 2018, 08:00 pm | View | Ham Won |
| Somerset | Som | Essex | Ess | County Ground | Taunton | 19 Aug 2018, 08:00 pm | View | Som Won |
| Yorkshire | Yor | Worcestershire | Wor | Queens | Queens | 19 Aug 2018, 08:00 pm | View | Wor Won |
| Glamorgan | Gla | Durham | Dur | Sophia Gardens | Cardiff | 19 Aug 2018, 08:00 pm | View | Dur Won |
| Leicestershire | Lei | Kent | Ken | Grace Road | Leice | 19 Aug 2018, 08:00 pm | View | Ken Won |
| Northamptonshire | Nth | Middlesex | Mid | County Ground | Northam | 19 Aug 2018, 08:00 pm | View | Mid Won |
| Sussex | Sus | Derbyshire | Der | County Ground | Hove | 19 Aug 2018, 08:00 pm | View | Sus Won |
| Warwickshire | War | Gloucestershire | Glo | Edgbaston | Edgb | 19 Aug 2018, 08:00 pm | View | War Won |
| Surrey | Sur | Lancashire | Lan | The Oval | The Oval | 19 Aug 2018, 10:30 pm | View | Sur Won |
| Round 11 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Essex | Ess | Hampshire | Ham | County Ground | Chelms | 29 Aug 2018, 08:00 pm | View | Ess Won |
| Lancashire | Lan | Worcestershire | Wor | Trafalgar Road Ground | SouthP | 29 Aug 2018, 08:00 pm | View | Lan Won |
| Surrey | Sur | Nottinghamshire | Not | The Oval | The Oval | 29 Aug 2018, 08:00 pm | View | Sur Won |
| Yorkshire | Yor | Somerset | Som | Headingley | Leeds | 29 Aug 2018, 08:00 pm | View | Som Won |
| Derbyshire | Der | Kent | Ken | County Ground | Derby | 29 Aug 2018, 08:00 pm | View | Ken Won |
| Durham | Dur | Northamptonshire | Nth | Riverside Ground | Durham | 29 Aug 2018, 08:00 pm | View | Nth Won |
| Glamorgan | Gla | Warwickshire | War | Penrhyn Avenue | Penrhyn | 29 Aug 2018, 08:00 pm | View | War Won |
| Gloucestershire | Glo | Leicestershire | Lei | County Ground | Bristol | 29 Aug 2018, 08:00 pm | View | Glo Won |
| Middlesex | Mid | Sussex | Sus | Lords | Lords | 29 Aug 2018, 08:00 pm | View | Mid Won |
| Round 12 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Essex | Ess | Surrey | Sur | County Ground | Chelms | 04 Sept 2018, 07:30 pm | View | Sur Won |
| Nottinghamshire | Not | Yorkshire | Yor | Trent Bridge | Trent Brid | 04 Sept 2018, 07:30 pm | View | Drawn |
| Somerset | Som | Lancashire | Lan | County Ground | Taunton | 04 Sept 2018, 07:30 pm | View | Tied |
| Worcestershire | Wor | Hampshire | Ham | New Road | Worc | 04 Sept 2018, 07:30 pm | View | Ham Won |
| Derbyshire | Der | Glamorgan | Gla | County Ground | Derby | 04 Sept 2018, 07:30 pm | View | Der Won |
| Gloucestershire | Glo | Middlesex | Mid | County Ground | Bristol | 04 Sept 2018, 07:30 pm | View | Drawn |
| Kent | Ken | Northamptonshire | Nth | St Lawrence Ground | St Law | 04 Sept 2018, 07:30 pm | View | Ken Won |
| Sussex | Sus | Leicestershire | Lei | County Ground | Hove | 04 Sept 2018, 07:30 pm | View | Sus Won |
| Warwickshire | War | Durham | Dur | Edgbaston | Edgb | 04 Sept 2018, 07:30 pm | View | Drawn |
| Round 13 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Somerset | Som | Rose Bowl | Rose Bowl | 10 Sept 2018, 07:30 pm | View | Ham Won |
| Nottinghamshire | Not | Essex | Ess | Trent Bridge | Trent Brid | 10 Sept 2018, 07:30 pm | View | Ess Won |
| Worcestershire | Wor | Surrey | Sur | New Road | Worc | 10 Sept 2018, 07:30 pm | View | Sur Won |
| Yorkshire | Yor | Lancashire | Lan | Headingley | Leeds | 10 Sept 2018, 07:30 pm | View | Yor Won |
| Durham | Dur | Sussex | Sus | Riverside Ground | Durham | 10 Sept 2018, 07:30 pm | View | Dur Won |
| Glamorgan | Gla | Gloucestershire | Glo | Sophia Gardens | Cardiff | 10 Sept 2018, 07:30 pm | View | Glo Won |
| Leicestershire | Lei | Warwickshire | War | Grace Road | Leice | 10 Sept 2018, 07:30 pm | View | War Won |
| Middlesex | Mid | Kent | Ken | Lords | Lords | 10 Sept 2018, 07:30 pm | View | Ken Won |
| Northamptonshire | Nth | Derbyshire | Der | County Ground | Northam | 10 Sept 2018, 07:30 pm | View | Der Won |
| Round 14 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Essex | Ess | Worcestershire | Wor | County Ground | Chelms | 18 Sept 2018, 07:30 pm | View | Ess Won |
| Somerset | Som | Surrey | Sur | County Ground | Taunton | 18 Sept 2018, 07:30 pm | View | Drawn |
| Yorkshire | Yor | Hampshire | Ham | Headingley | Leeds | 18 Sept 2018, 07:30 pm | View | Drawn |
| Gloucestershire | Glo | Northamptonshire | Nth | County Ground | Bristol | 18 Sept 2018, 07:30 pm | View | Drawn |
| Kent | Ken | Glamorgan | Gla | St Lawrence Ground | St Law | 18 Sept 2018, 07:30 pm | View | Ken Won |
| Leicestershire | Lei | Durham | Dur | Grace Road | Leice | 18 Sept 2018, 07:30 pm | View | Lei Won |
| Middlesex | Mid | Derbyshire | Der | Lords | Lords | 18 Sept 2018, 07:30 pm | View | Mid Won |
| Sussex | Sus | Warwickshire | War | County Ground | Hove | 18 Sept 2018, 07:30 pm | View | Drawn |
| Bye: Nottinghamshire, Lancashire | ||||||||
| Bye: Not, Lan | ||||||||
| Round 15 | ||||||||
| Home Team | Home | Away Team | Away | Ground | Time | Stats | Scorecard | ESPN |
| Hampshire | Ham | Lancashire | Lan | Rose Bowl | Rose Bowl | 24 Sept 2018, 07:30 pm | View | Lan Won |
| Nottinghamshire | Not | Somerset | Som | Trent Bridge | Trent Brid | 24 Sept 2018, 07:30 pm | View | Som Won |
| Surrey | Sur | Essex | Ess | The Oval | The Oval | 24 Sept 2018, 07:30 pm | View | Ess Won |
| Worcestershire | Wor | Yorkshire | Yor | New Road | Worc | 24 Sept 2018, 07:30 pm | View | Yor Won |
| Derbyshire | Der | Gloucestershire | Glo | County Ground | Derby | 24 Sept 2018, 07:30 pm | View | Glo Won |
| Durham | Dur | Middlesex | Mid | Riverside Ground | Durham | 24 Sept 2018, 07:30 pm | View | Mid Won |
| Glamorgan | Gla | Leicestershire | Lei | Sophia Gardens | Cardiff | 24 Sept 2018, 08:00 pm | View | Gla Won |
| Northamptonshire | Nth | Sussex | Sus | County Ground | Northam | 24 Sept 2018, 08:00 pm | View | Nth Won |
| Warwickshire | War | Kent | Ken | Edgbaston | Edgb | 24 Sept 2018, 08:00 pm | View | War Won |
