Rotten goal leads to Everton's dramatic upset (8)
I believe the answer is:
offended
'upset' is the definition.
(I've seen this before)
'rotten goal leads to everton's dramatic' is the wordplay.
'rotten' becomes 'off' (I've seen this before).
'goal' becomes 'end' ('end' can be a synonym of 'goal').
'leads to' indicates taking the first letters.
The initial letters of 'everton dramatic' is 'ed'.
'off'+'end'+'ed'='OFFENDED'
(Other definitions for offended that I've seen before include "Upset" , "Caused to feel hurt" , "Committed an illegal act" , "Annoyed because of a perceived insult" , "Hurt the feelins of" .)