A disputed penalty killed off hopes of a fightback from Bourne against Northampton Spencer at the Abbey Lawn on Saturday.
Spencer returned home 3-0 winners with Bourne offering little after going two down early in the second half.
The Northampton side took the lead early in the first half with Paul Pickering opening the scoring at a corner.
John Currall had Bourne’s best chance, firing over from close range in the first half, and Bourne fell further behind when Dan Smith was penalised for handball in the penalty area.
Wakes boss Darren Munton reckons the decision was harsh but Luke Stone scored from the spot and Bourne had a mountain to climb.
Lee Unwin scored the visitors’ third with a mishit shot six minutes from time.
“It was disappointing,” said Munton. “They scored with their first chance and we never got going at all in the second half.
“Energy levels seem to have dipped in recent weeks and we seemed to switch off at half time. I don’t think the break has helped.”
On the penalty decision, he added: “It was ball to hand. Dan did not have a clue about it.
“We were in it at 1-0 but then the lads’ heads dropped and we were chasing the game.”
The Wakes travel to United Counties League First Division leaders AFC Rushden and Diamonds on Saturday. The Northants side beat Bourne 2-1 in the reverse fixture earlier this year.
Bourne: Aaron Bellairs, Tom Cardall, Kev Elgar, Seb Hood, Aaron Jesson, Dan Smith, John Currall, Jimmy McDonnell, Andy Moss, Craig Rook, Tom Waumsley. Subs: Simon Penney, Danny Pick, Scott Spearink.