Extra deliveries (5)

I believe the answer is:

wides

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'extra deliveries' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'extra deliveries' is the wordplay.
'extra' becomes 'wide' (cricket term).
'deliveries' becomes 's' (I can't explain this - if you can you should believe this answer much more).
'wide'+'s'='WIDES'

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I've seen this clue in the Evening Standard.

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