The Solly Sports ECB Yorkshire Premier League season opens on Saturday with captains having a variety of playing condition changes to contend with.
Play will still be 55 overs per side,but bowlers will be restricted to 17 overs in a normal innings.
Teams fave a five-run penalty for slow over rates, and any leg side bowling will be called wide.
The League Cup is to be totally revamped, with 45-over matches, coloured clothing and pink balls.
Other rules including free-hits, power-plays and the Duckworth-Lewis method will also be implemented.
Reigning champions York are looking to extend their record breaking run to seven consecutive titles.
They have retained last season’s squad, and have also brought in Jack Leaning,son of former Sheffield United goalkeeper Andy.
Sheffield United, again led by Paul Cummins, have signed four new players - including South African Helgard Prinsloo - and will be hoping to improve on last season’s tenth-placed finish.
Sheffield Collegiate will again be led by Matt Dixon, aided by former Yorkshire man Simon Guy. Richard Blakey’s son Ashton will open the batting with evergreen Nick Gaywood.
n Saturday’s fixtures (12pm): App Frod v Doncaster, Castleford v Yorkshire Academy, Cleethorpes v Sheffield United, Driffield v Barnsley, Rotherham v Harrogate, Scarborough v York, Collegiate v Hull.