This was followed by a second, which was a solo goal, a sure contender for goal of the week, by Abrams from the left, taking on the Bilbaum defender, rounding the keeper and slotting home calmly.
The London Haroldeans third and fourth goals were both Abrams' headers; one looping home from a London Haroldeans corner, floating back across the goal into the top corner and the fourth and final goal came after a Yafeth Asher cross was guided into the net, sealing the remarkable and memorable victory.
Weak defending by London Haroldeans was to blame for all three of the Bilbaum goals - a brace from Ed Green and one for Jake Gilbert, which were well-taken, and the game could have gone either way all three times that the teams were level.
Haroldeans joint-manager Sam Huglin told JC Sport: "The lads were absolute quality today, outstanding performance to a man. One final comment, James Abrams...Legend!"
Co-boss Jonny Abrams was delighted with the team's and his brother James' performance, which was watched by proud father Gregory Abrams, who had travelled to London from Liverpool to watch the game.