Aficionado totally fab, so amazing in supporters' game? (7,8)

I believe the answer is:

fantasy football

I'm a little stuck... Click here to teach me more about this clue!

'supporters' game?' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'aficionado totally fab so amazing' is the wordplay.
'aficionado' becomes 'fan' (I've seen this before).
'amazing' indicates an anagram.
'totally'+'fab'+'so'='totallyfabso'
'totallyfabso' anagrammed gives 'tasyfootball'.
'fan'+'tasyfootball'='FANTASY FOOTBALL'

'in' is the link.

Can you help me to learn more?

(Another definition for fantasy football that I've seen is " management game".)

I've seen this clue in The Telegraph.

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