Forwards? King's better going backwards (4)
I believe the answer is:
pack
'forwards?' is the definition.
(Rugby term)
'king's better going backwards' is the wordplay.
'king' becomes 'K' (abbreviation for king in chess).
'better' becomes 'cap' (I've seen this before).
'going backwards' says the letters should be written backwards.
'k'+'cap'='kcap'
'kcap' written backwards gives 'PACK'.
(Other definitions for pack that I've seen before include "Wolf group" , "Fill (a suitcase)" , "Put clothes etc into suitcase" , "Cardboard container" , "Parcel" .)