Reds fan, perhaps, I help when distressed after 1-0 upset (9)
I believe the answer is:
oenophile
'reds fan perhaps' is the definition.
(formal term for a wine lover)
'i help when distressed after 1-0 upset' is the wordplay.
'when distressed' is an anagram indicator.
'after' means one lot of letters go next to another.
'o' becomes 'one' ('one' can be a synonym of '1'**).
'0' becomes 'o' (I've seen this in other clues).
'upset' says the letters should be written backwards.
'one'+'o'='oneo'
'oneo' in reverse letter order is 'oeno'.
'i'+'help'='ihelp'
'ihelp' anagrammed gives 'phile'.
'phile' after 'oeno' is 'OENOPHILE'.
(Other definitions for oenophile that I've seen before include "grape nut" , "wine I enjoy" , "port authority" , "Lover of wine" , "Connoisseur of wine" .)