Chatteris first team closed in on promotion by beating Bluntisham by eight wickets in CCA Senior Division Two on Saturday.
They are in second place with just three games left to play and hold a 17-point lead over the third team.
Bluntisham batted first and scored 132 all out with Chatteris bowlers Ant Palmer four for 32, Joe Menarry 1-27, Ant Bamford 3-25 and Andy Wool 2-41 taking the wickets,
In reply Chatteris were 135 for two with the undefeated pair Alex Platt 56 and Bamford 53 in fine form in a third-wicket partnership.
On Sunday Chatteris beat Wimblington by 42 runs in the Fenland Trophy.
Chatteris scored 180 for four and Wimblington were all out for 138.