BARNSLEY Hockey Club's men's team completed their title-winning season with a 2-1 loss at home to Doncaster.
The Reds finished with 15 wins, three draws and two defeats in their 20 Yorkshire Peak and Wold matches.
That left them six points clear at the top.
Their only previous loss came in the second match of the season, after which they were unbeaten in 17.
It is currently unclear which division the Reds will be placed into next season as there is due to be a restructuring of the Yorkshire leagues.