Towcestrians became just the third side to beat newly-crowned South West One East champions Chippenham at the weekend when they edged a low-scoring game 10-8.
Having already secured second place and a spot in the promotion play-off, Tows were targeting a sixth straight win in their penultimate game of the season but they had to resist some early Chippenham pressure as the visitors dominated in the scrum.
The first half was a cagey affair and it looked like Tows would go in level at 0-0, only for a Chippenham player to intercept a loose pass and cross for an unconverted try.
The visitors then stretched their lead to eight with a penalty soon after the restart.
However, just as it appeared the league leaders were gaining control, Tows fought back brilliantly and set up an exciting finish when Marc Yeates displayed great strength to drive over from a strong Towcester maul.
The conversion was missed, leaving the visitors three ahead, but that was soon to change as an overthrown Chippenham line-out allowed Tows to break before full-back Matt Yuill dotted down the match-winning try, much to the delight of the home fans.
The missed conversion mattered little as Tows held on to claim a dramatic victory.
Towcestrians, who have now passed the 100-point mark, make the trip to Devizes for their final match of the regular season this weekend.