The ‘Flowerpot Men’ welterweight encounter featuring Billy Le Poullain was just coming to the boil when, deep into the second round, the impressive Vaughan began seeping blood from a cut on his right eyebrow.
Referee George Jennings stepped in for a closer look and the show medical officer, Dr Clare Betteridge, ruled it was too severe to continue.
The decision riled many but it was the right one and it saved Le Poullain from a likely loss.
Amalgamated head coach Ben Duff had said beforehand that Vaughan, an England international, was a class act and the southpaw was quick to show it.
The second round saw him clearly dominate and catch Le Poullain with plenty eye-catching shots so, naturally, he was bitterly disappointed to be stopped in his tracks.
Other highlights from a 21-bout show watched by more than 500 noisy punters, were tight wins for Casey de la Mare, Chris Sumner, Mason Smale and Jimmy Lesbirel, but defeats for all three of the local heavyweights.
Tomasz Kot was knocked clean out in the final round of his heavyweight bout and was checked over by Dr Betteridge in the ring.