Extra work (3,4)

I think it could be either:

Which length description are you looking for?:

3,4

run

I believe this is a double definition.

'extra' is the first definition.
(extra is a type of cricket run)

'work?' is the second definition.
(both can mean to operate something)

(Other definitions for run that I've seen before include "Possibly an extra" , "Move at speed" , "publish" , "Manage, operate" , "On the . . . - fleeing from pursuit" .)

I've seen this clue in The Times.

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