The Bradford League will introduce a two-section Division Two and a Division One with an odd number of clubs after an end-of-season upheaval.
The league will lose Lidget Green and Yorkshire Bank totally, but will gain Woodlands and Mirfield from the Central Yorkshire League.
The decisions were made by the league executive following the news that Yorkshire Bank have decided to disband at the end of the season.
They received the resignation of founder members Lidget Green at the end of June.
The bottom two Division One clubs - Drighlington and Windhill - will play in separate sections in the new-look Second Division as will Woodlands and Mirfield.
The sections in which the other clubs will play will be determined when final placings are known after today's matches.
What is known is that the top three clubs in Division Two - champions Undercliffe, Spen Victoria and new boys Gomersal - will play First Division cricket next season.
The two new sections in Division Two will each have eight clubs.
They will play each other twice will also play every club in the other section once, giving them 22 matches.
The top club in each section will be promoted and there will be a play-off between them to decide the Division Two championship.
The ups and downs mean the Division One will have 13 clubs, which will give each 24 matches, two less than this season.
But the structure of the league for 2002 will be reviewed again during the new campaign.
Chairman Graham Reid said: "The new system in the Second Division gives us more flexibility.
"It will also make it easier for the new clubs to gain promotion.
"The new clubs may not want to have to play their way up from a third division."
The league have tried a two-section format before, in 1989, but it lasted for just one season.
Then the sections were called Verity and Bowes.
No decision has been taken on the names of the new sections.
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