Boston United suffered their third defeat against Brackley this season - going down 2-1 at York Street.
Stefan Moore put the Saints in front in the sixth minute from close range, only for Jamie McGhee to pull the Pilgrims level with 27 minutes on the clock.
However, it was Brackley who secured the points in the 72nd minute when Boston defender Carl Piergianni put the ball into his own net after attempting to clear Glenn Walker’s header.
United had previously lost to Brackley in the FA Cup (2-0) and Skrill North (3-2) this campaign.
The result sees Brackley move above Boston to third in the standings, with the Pilgrims now in fourth.
UNITED: Sam Vince; Conor Marshall, Scott Garner, Carl Piergianni, Rene Steer; Jamie McGhee (Ian Ross 79), Kyle Dixon (Ben Fairclough 79), Liam Agnew; Spencer Weir-Daley (Ryan Semple 63), Marc Newsham, Ricky Miller. Subs (not used): Stefan Galinski, Lewis King.
BRACKLEY: Billy Turley; Remy Clerima, Ryan Austin, Tom Sharpe, Dominic Langdon; Izak Reid, Brett Solkhon, Eddie Odhiambo, Glenn Walker; Stefan Moore (Ben Mills 90), Steve Diggin (Gary Mulligan 90). Subs (not used): Eddie Nisevic, David Bridges, Steve Towers.
Ref: Ricky Wootton