AFC Rushden & Diamonds returned to the top of the Evo-Stik League South East table on Tuesday night.
In front of a crowd of 452 at Hayden Road, saw a tight contest against play-off chasing AFC Dunstable.
And it looked as though the visitors would take a point away with them, until 7 minutes from time when sub Ben Farrell was brought down in the box by Drew Roberts.
Shortly before that, Diamonds` keeper Ben Heath proved the hero with a stunning save to deny Leon Cashman.
Chalfont St Peter kept their outside play-off hopes just about alive but could have done with all three points against a Marlow side who failed to show for their game at the weekend.
The players were back in harness and took the lead right on half-time through Kameron English only for Adam Kirby to pull the home side back on level terms in stoppage time.
Arlesey Town were finally put out of their misery when their 2-0 home defeat by Aylesbury FC and Barton Rovers` 2-2 draw at Sharpenhoe Road against Kempston Rovers sent them down.
Arlesey beat the Moles 5-1 a dew weeks ago but have won only one other game all season.
Antony Njogu 5 minutes into the second half and Shayne Almond 9 minutes from time sealed the visitors` win.
Jake Newman had Kempston in front after 14 minutes, but Michael Gyasi and then Romaine Walker gave Barton the advantage until Nathan Tshikuna equalised 18 minutes from time.
Elsewhere, Joe Briggs and Lewis Fennemore sealed Moneyfields` 2-1 win at the Runnymede Stadium after Michael Kalu had given them a 35th minute lead, and the other match ended in a draw.
Ashford Town (Middx) shared the spoils with Thame United, whose Dan West cancelled out Tom Howard`s 51st minute opener just 4 minutes later.
Pitchero Non League
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