Final score: Ulster beaten (6)
I believe the answer is:
result
'final score' is the definition.
(I've seen this before)
'ulster beaten' is the wordplay.
'beaten' is an anagram indicator.
'ulster' anagrammed gives 'RESULT'.
(Other definitions for result that I've seen before include "Effect of lustre" , "End - issue" , "Effect - outcome" , "Final outcome" , "Consequence in Ulster (6)" .)