Telecast a diary inside arenas (6)

I believe the answer is:

stadia

'arenas' is the definition.
(plural of 'stadium')

'telecast a diary inside' is the wordplay.
'inside' indicates the answer is hidden within the clue.
'STADIA' is hidden in the letters of 'telecast a diary'.

(Other definitions for stadia that I've seen before include "major venues" , "Bowls" , "Sports grounds" , "Athletics grounds" , "Big venues" .)

I've seen this clue in the Sydney Morning Herald.

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