Boston Rugby Club moved themselves up to eighth in the Midlands 3 East (North) following a hard-fought 38-34 victory at Mellish.
Tom Brooks was in superb form, scoring a total of 23 points to earn the Blue and Whites their third victory since promotion, and their first on the road.
Boston were again depleted due to injury and work commitments, but those who travelled were to show their bullishness and heart, working for and with each other right until the end of the game.
Michael Baldwin shimmied, stepped, dodged and slipped out of tackles to run half the length of the pitch to score an early try, which Brooks converted.
Not for the first time, Boston were caught npping and Mellish responded with a try of their own.
But Joe Deamer forced his way through the defensive line and scored himself, before Brooks added two more tries to hand Boston a comfortable interval lead.
So often this season the Blue and Whites have left themselves with a second-half mountain to climb.
But four first-half tries, all converted by Brooks, saw them take a comfortable 28-12 lead into the break, even if the opening 40 minutes had seen Jack Stokes sin-binned for an adjudged late tackle and Baldwin replaced by Chris Cook following a head injury.
Minutes into the second half Boston were reduced to 14 men as Kenny Doig was sin-binned for infringing at the breakdown.
The hosts made the most of their advantage and reduced the arrears to 28-24.
An injury to Sam Johnson brought debutant Kurt Charalambou into the fray as Boston reshuffled.
The next score was going to be vital, and Boston player-coach Willem Jonker ensured it would be his side as he scooped up a loose ball and charged unopposed down the sideline to touch down, before Brooks converted again.
The Nottinghamshire-based side then scored again to move them back into contention.
An indiscretion by Mellish just outside the 22-yard line gave Brooks the chance to kick his side 38-29 ahead, and that was to prove decisive as the hosts scored a late try.
However, Boston held on for a narrow - but vital - 38-34 success.
Boston entertain Nottingham Moderns in league action at the Boardsides on Saturday (2.15pm).
BOSTON: Sampson, Deamer, Enderby, Doig, Johnson, Stokes, Scupham, Jonker, T. Brooks, Baldwin, Smith, Cowern, Hodgson, Andrew; Replacements: Cook, Charalambou.