Was briefly unconscious of animal tipped to win (9)

I believe the answer is:

catnapped

'was briefly unconscious' is the definition.
(to catnap is to have a short sleep)

'animal tipped to win' is the wordplay.
'animal' becomes 'cat' (I've seen this before).
'tipped to win' becomes 'napped' (to nap a racehorse is to tip it as a likely winner).
'cat'+'napped'='CATNAPPED'

'of' is the link.

(Another definition for catnapped that I've seen is " rested intermittently".)

I've seen this clue in The Times.

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