Conisbrough all but ended Tickhill’s hopes of a top three finish with a three wicket win at Alderson Drive.
The torrential rain which hit every ground during late afternoon on Saturday created havoc with the fixtures.
The one game to be completed in the Championship, at Tickhill, also virtually ended the home side’s hopes of playing in next season’s new ECB South Yorkshire Premier League.
Tickhill’s innings was in disarray from the outset. A remarkable piece of bowling by Scott Lowe saw him take the first six wickets to leave Tickhill reeling at 18-6.
The hosts were all out for 70 with Lowe finishing with figures of 6-18 and Craig Jackson chipping in with 3-19.
Conisbrough’s path to victory, however, was far from plain sailing. Half of their batsmen were back in the pavilion with the score at 28-5.
Man of the match Lowe (17 not out) then took over to steer his side home. Steve Reid took 4-27 and Stewart Groves claimed 3-36.
Defeat leaves Tickhill 14 points adrift of third-placed Whitley Hall with just three games to play. Conisbrough’s victory, meanwhile, saw them close to within two points of their Doncaster rivals.
Wath looked to be easing their relegation worries in the key relegation match at Stonelow against Coal Aston.
Coal Aston were all out for 123. Daniel Hemingway scored 26, while Shawn Dyson took 4-38 and Steven Johnson 3-33.
Skipper Rob Barlow opened with 38 and Sam Drury added 30 as Wath reached 100-4 when the rain came.
Promotion-chasing Sprotbrough looked to be in a good position when rain prevented a result at Armroyd Lane in their Division Two clash with Elsecar B.
They bowled Elsecar out for 170, whose score was boosted by 37 from stumper Richard Kirk.
Michael Threapleton took 4-51 and Scott Sennens 3-28.
Sprotbrough were 59-0 at the close, with Sennens unbeaten on 43.
Warmsworth, level on points with Sprotbrough, were in a good position when the elements intervened at Northfield Lane against Wickersley B.
Skipper Chris Hadley anchored Warmsworth’s imposing 302-2 with a superb 137 not out, inclding 17 fours and five sixes.
Wickersley had reached 40-1 in reply.
Mexborough wrapped up promotion from Division Four East despite the weather ruining their finely poised game with Adwick-le-Street.
Zac Gayfer (4-31) and Jaan Shanaka (4-14) skittled Adwick for 110.
Opener James Hobson with 35 helped Mexborough to 52-1 but a flurry of wickets saw them decline to 76-5 when the weather took over. Declan Muldowney had taken 3-42.