The Alderson Drive club beat relegation-threatened Rotherham Town at home to confirm their promotion and will join Doncaster Town in next season’s top flight.
They could win the Championship title this weekend with a victory at Darfield.
Pete Mawdsley (51), Michael Jepps (45) and Liam Johnson (36) saw the home side up to 200-8 from their 50 overs.
In reply Rotherham could only muster 112 all out. Liam Johnson shone with the ball, finishing with excellent figures of 5-27.
Alex Rowland also captured 3-29 and Callum Stuart chipped in with 2-20.
Conisbrough’s promotion challenge hit the rocks at St Peter’s Drive against Darfield.
Skipper Amit Kundra scored 36, wicketkeeper Stuart Groves made 47 and Neil Spruce hit a quickfire 55 not out in 32 balls to get the home side up to 226 all out.
With key players missing, Conisbrough tried seven bowlers but Darfield were victorious by seven wickets.
Andrew Wood, who reached 98 not out, and Sam Woodcock, who made 69, added 125 runs for the third wicket.
Sprotbrough’s excellent first season in the Championship has come off the rails as they slumped to a fourth successive defeat at Collegiate B.
The Melton Road club have found runs hard to come by in recent weeks and could only muster 90 all out.
Josh Varley enjoyed his day by taking 5-26 and Tom Eldred supported with 3-15.
Collegiate only needed one wicket to achieve an important victory and move them eight points clear of the relegation zone.
Pranav Susarla steered them to success with 49 not out.
Wath won by four wickets at home to bottom of the table Sheffield and Phoenix United.
Skipper Isuru Jayakody scored 30 and Mustafa Hussain made 37 in United’s total of 172-9.
Shawn Hopkins was in good form, snaring 6-36.
Wath reached their target with four wickets and 12 overs to spare.
Harvey Wootton recorded an excellent 82, achieved in 74 balls and including 11 fours and two sixes.
James Barnard (35) joined him in a stand of 98 runs for the third wicket.