Tickhill confirmed their promotion to the Premier Division of the South Yorkshire League with a 121-run win over third-placed Conisbrough.
Conisbrough, who now face an upward battle to join their rivals in the top flight, had the champions-elect in a spot of bother at 25-2.
But their hopes of rolling over Tickhill for a chaseable total were dashed by Aaron Haycock and Mitchell Phelps, who smashed 82 and 50 respectively.
Those innings set the platform for a challenging total of 290-7, with late cameos from Alex Rowland (46) and Dom McGough (55 off 29 balls).
In reply, Conisbrough started brightly and reached 66 with only one wicket down.
Whilever skipper Gary Strephan was at the crease, they knew they had a chance - but his brave vigil was ended for 55, when he was caught by Tom Barnett off Phelps, who finished with 4-44.
Earlier, a patient 35 from Matthew Barnes eased Conisbrough’s early nerves, before he became one of Alex Rowland’s five victims.
Strephan, fresh from a recent knee operation, departed when the score was on 158-7.
After losing their talismanic captain, Conisbrough folded and lost their last three wickets for eleven runs, and were bowled out for 169.
Rowland showed why he is top of the bowling averages, taking 5-59.
n Darfield, meanwhile, need just eight more points to join Tickhill in the Premier Division after enjoying an 88-run win over Wath B at School Street.
Darfield took first knock after being put into to bat, with captain James Ward (24) and Peter Hadfield opening.
They built an opening partnership of 59 for the first wicket, followed by a 99-run stand between Hadfield and Tom Smyth.
Smyth then departed for 47, and Hadfield followed shortly after for an excellent 79, containing nine fours and one six.
Luke Potter and and Ashley Ward smashed their way to 84 for the fourth wicket, before Ward was trapped lbw for 45, with Potter finishing not out on 66 from just 38 balls as the Darfield innings closed at 291 for 5.
Wath lost their first wicket with the score on 30, but they recovered slightly thanks to Will Turner’s 64.
Shaun Dyson and Andy Bell each scored 30 in their total of 203-9, the final pair standing firm for eight overs as Darfield failed to claim two important bonus points.
Tom Smyth took three for 56. On Saturday, Darfield travel to Barnsley.
n Conisbrough’s B team enjoyed more success than their firsts, meanwhile, with a narrow victory over Upper Haugh B in Division Three.
After losing the toss and being inserted, Conisbrough posted 221-8 from their 46 overs.
Opener Lee Johnson hit 41 before he was trapped lbw by Jack Ramsey, and Des Steele top scored with 55. Late cameos from Tom Gardner (24) and Matt Frost (21*) helped Conisbrough to a challenging total.
It is with the ball that Frost does his best work, however, and he soon ripped through the Upper Haugh line-up, finishing with 5-63 from his 13 overs as the visitors were bowled out for 200 in 40.4 overs.
Tom Wylde hit 39, and a number of Haugh batsmen made decent starts, but none could really kick on and put their side in a commanding position.
n A four-wicket spell from Talib Hussain helped Maltby MW to a nine-wicket win over Norton Oakes in Division Three.
Hussain - ably supported by opening bowlers Liam Woodward and Gary Porter, who took three wickets each - finished with figures of 4-8 from 3.1 overs as Norton Oakes were bowled out for just 75 in 33.1 overs.
Despite losing skipper Tom Groom for 10, with the score on 15, there were no further hiccups for Maltby as they strolled home by nine wickets inside 23 overs.
Kevin Porter was unbeaten on 19, and Paul Jevons finished on 41 not out.