Erith Town were Derby Day victors at Park View Road thanks to a last minute Steadman Callender winner.
In front of a huge crowd of 326, the hosts took the lead in the 17th minute when Danny Lear completed a fine team move.
Callender got his first of the game just before the break and The Dockers took the lead on the hour mark when Tom Ash headed home.
With 2 minutes to play it looked like Nathan Palmer had earned The Deres a share of the spoils but Callender popped up late to give Erith Town the Derby Day bragging rights.
With just 2 games to play both sides will still have an eye on a 5th placed finish.