Cricket extras (4)
I believe the answer is:
byes
'cricket extras' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for byes that I've seen before include "Runs wicketkeeper concedes" , "They may help cricketers to win" , "In cricket, runs scored from balls that pass the batman without being hit" , "Cricketing extras" , "Greedy person; seabird" .)