I received two helpful replies to my question from vetuste_ennemi and Anneyelland but can't seem to find how to 'Mark best Answer' or to reply in order to thank them.
The clue is 33 down: 'Ultimate prizes for 1 down for the winner'. 1 down is 'Cupfinals'
A ten-letter answer and I have ////e///r/. Any suggestions? Thank you....