Andy Theodosiou, Greg Downs, David Titterton and Richard Jones all receive their marching orders from referee Brian Coddington.
Despite being 1-0 down with nine men at the time Hereford equalise through Simon Brain.
There's also a pitch invasion and David Titterton was questioned by the police after the game.
With 70 minutes played the game was a boring 0-0 and heading for an easily forgotten stalemate, then it all kicked off.
Interviews with four players sent off who give their memories of the game.
Andy Theodosiou
Greg Downs
David Titterton
Richard Jones
Northampton 1 Richardson 2 Parsons 3 Chard 4 Beavon 5 Angus 6 Terry 7 Bell 8 Colkin 9 Scott 10 Brown 11 Wilkin Sub Burnham Hereford 1 Judge 2 Anderson 3 Downs 4 Jones 5 Devine 6 Theodosiou 7 Hall 8 Wade 9 Brain 10 Nicholson 11 Titterton
Attendance 2,668