WATH saw the season out with their first win in three matches but it took a late penalty to seal it.
Ben Keen struck with two minutes to go to secure a 15-13 win over Aireborough at Moor Road.
For so long it appeared Wath would go through the season unbeaten.
But after sealing the Yorkshire Three title, they slipped to two successive defeats to bring about a muted end to such a special campaign.
They rallied at the right time to ensure the promotion party was started in the right mood with victory over their Bradford visitors.
After conceding an early penalty, Wath turned round 7-3 ahead through a try by number eight Jason Wignall which was converted by Keen.
The Moor Road side then took a 12-3 lead, when prop Brendan Angell crashed over for a try in the second half.
But Wath found themselves fighting for their honour as Aireborough pulled back a converted try and then, with 10 minutes remaining, took a 13-12 lead with a second penalty goal.
Wath were last night looking to add the Gerry Roberts Trophy to their silverware haul when they met Sheffield Abbeydale after the Times went to press.
They also remain in the hunt for the Yorkshire Silver Trophy.