Run; in addition (5)
I believe the answer is:
extra
This clue is a double definition.
'run' is the first definition.
(cricket run)
'in addition' is the second definition.
(I've seen this in another clue)
(Other definitions for extra that I've seen before include "no ball perhaps" , "Small part actor" , "Additional expense" , "Bolt-on" , "entry on scorecard?" .)