The Cricketer provides all the information you need ahead of the next round of matches as the red-ball format head to the likes of Newport and Beckenham
Where: Newclose County Ground
When: Monday, 20 May-Thursday, 23 May
Lowdown: The visitors are desperately in need of a pick-me-up, Hampshire are in a good place right now. Cricket returns to the Isle of Wight.
One to watch: Liam Dawson, continuing to impress in a late bid for a World Cup place.
Weather: Rainy start to the match but brightening up as the week progresses.
Tickets: £16 adults, Under-17 - click here for more details.
Prediction: Hampshire
Where: Beckenham
When: Monday, 20 May-Thursday, 23 May
Lowdown: Draw specialists Surrey in search of their first four-day win this season take on a Kent side who battled in vain against Yorkshire.
One to watch: Zak Crawley, Harry Podmore, Ryan Patel, Will Jacks... young talent in abundance in this one.
Weather: Mostly dry, though Monday might be a bit iffy.
Tickets: £15 adults, Under-16 £5 - click here for more details.
Prediction: Surrey
Where: Taunton
When: Monday, 20 May-Thursday, 23 May
Lowdown: League leaders versus bottom of the pile. But will it be as simple as that?
One to watch: Lewis Gregory, the player of the season in the Championship so far.
Weather: Brightish start to the week but getting worse throughout.
Tickets: £13 adults, Under-18 - click here for more details.
Prediction: Somerset. Of course.
Where: The County Ground
When: Sunday, May 19-Wednesday, May 22
Lowdown: The Inconsistents do battle.
One to watch: Billy Root. Outscoring his brother so far this year.
Weather: Should be dry, with temperatures pushing 20 degrees Celsius, for much of the match.
Tickets: £12 adults, Under-16 £4 - click here for more details.
Prediction: Glamorgan.
Where: Chester-le-Street
When: Monday, 20 May-Thursday, 23 May
Lowdown: Bottom of the league against a team without a win. Something's gotta give.
One to watch: James Bracey. A big batting talent for Gloucestershire.
Weather: Brisk, overcast, quite windy.
Tickets: £12 adults, Under-16 - click here for more details.
Prediction: Durham to get off the mark.
Where: Old Trafford
When: Monday, 20 May-Thursday, 23 May
Lowdown: Second versus first, both teams with 100 per cent records. The match of the week.
One to watch: Saqib Mahmood. He's lit up the One-Day Cup, now to take that form into the first-class arena.
Weather: Pleasant, dry, a bit of sun. Reasonable cricket-watching stuff.
Tickets: £10 adults, Under-18 £5 - click here for more details.
Prediction: Lancashire to show they are title favourites.
Where: The County Ground
When: Monday, 20 May-Thursday, 23 May
Lowdown: Sussex were fancied pre-season but their batting has let them down. Can it change at Wantage Road?
Weather: Rain towards the end of the week.
Tickets: £12 adults, £6 15-17 - click here for more details.
Prediction: Sussex.