1-0 up: hard supporter's throttled Reds fan? (9)
I believe the answer is:
oenophile
'supporter's throttled reds fan?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'1-0 up hard' is the wordplay.
I cannot really see how this works, but
'1' could be 'i' (Roman numeral) and 'i' is located in the answer.
'0' could be 'o' (I've seen this in other clues) and 'o' is located in the answer.
'hard' could be 'h' (abbreviation used in pencil classifications) and 'h' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for oenophile that I've seen before include "Lover of wine" , "port authority" , "wine I enjoy" , "grape nut" , "Drink lover" .)