Unconscious, if sled crashes in playing areas (9)

I believe the answer is:

outfields

'playing areas' is the definition.

'unconscious if sled crashes' is the wordplay.
'unconscious' becomes 'out' ('out' can be similar in meaning to 'unconscious').
'crashes' is an anagram indicator.
'if'+'sled'='ifsled'
'ifsled' is an anagram of 'fields'.
'out'+'fields'='OUTFIELDS'

'in' acts as a link.

I've seen this clue in The Guardian.

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