The 1973 Final was to be the last time a play-off system would be used to determine the British champions until 1998's Super League season.
The match was played on 19 May 1973 at Bradford's Odsal Stadium between the previous season's champions, Leeds and first-time finalists, Dewsbury.
They bewildered a jaded Leeds outfit with a series of scissors moves and dummy passes that might have looked grossly over-elaborate had they not worked to such perfection."
The 1973 Challenge Cup Final was won by Featherstone Rovers who beat Bradford Northern 33–14 at Wembley Saturday 12 May 1973 before a crowd of 72,395.
Featherstone Rovers' Great Britain scrum half-back, Steve Nash put in a man-of-the-match performance to win the Lance Todd Trophy.
Cyril Kellett scored 8-conversions for Featherstone Rovers, the most in a Challenge Cup Final (equalled by Iestyn Harris in 1999).