Dearne and District won the NCEL Division One title with a 5-0 success at Club Thorne Colliery on Friday.
That left them with an unassailable lead with four games to play. It was a 13th straight win and a 32nd in 38 league games.
The scorers were Jamie Austin, Adam Baskerville, Joshua Dacre, Taylor Nicholson and Max Eastwood.
Fourth-placed Worsbrough Bridge won 3-0 at home to Maltby Main on Saturday with goals by Josh Brown, Dempsey Smith and Isaac Jeffreys.
Athersley Rec lost 2-0 at home to second-bottom Nostell MW on Friday.
The goals arrived in the second half, either side of a red card for James Woodhouse.
Rec are one place and five points clear of the relegation zone.
