Colne picked up only their fourth win of the season - and first in seven games on Saturday at home to East Lancashire.
But they were thumped by 10 wickets the following day at Rawtenstall.
On Saturday at the Horsfield, Colne were all out for 149.
Professional Ali Azmat top scored with 44, with further contributions from Lewis Rimmer (24) and Khurrum Nazir (22).
East Lancs paid man Matthew Kleinveldt took 3-44.
And in a thrilling run chase, Colne prevailed by one run.
Nick Westhead top-scored with 42 for the visitors, but East Lancs were reined in by Andy Hakin, who took 3-48 from 17 overs, and Nazir, whose one wicket came at the expense of only 20 runs from 14 overs.
Azmat also took 3-34, including two stumpings by Kenton Rhodes.
East Lancs needed eight runs off the last over, bowled by Colne captain Matt Walker, with two wickets in hand.
And the target became four off the final ball, but Paul Kelly could only score a single, as he ended 29 not out.
Sunday was a different story altogether, however.
Keith Roscoe - whose band Riflemen of War are performing at Colne tonight - did the damage with 5-31 as Colne were dismissed for 70 at the Worswick Memorial Ground.
Rawtenstall professional Brett Pelser added 3-24 and Imran Abid 2-14.
Nazir top-scored for Colne with 19 and Hakin made 13, but they were the only batsmen to reach double figures.
In reply, the hosts raced to victory within nine overs as Chris Cook-Martin hit an unbeaten 43 and Dean Barlow an unbeaten 28s.