Rugby home a wreck (4)
I believe the answer is:
ruin
'a wreck' is the definition.
(I've seen this before)
'rugby home' is the wordplay.
'rugby' becomes 'ru'.
'home' becomes 'in' ('he's home' can mean 'he's in').
'ru'+'in'='RUIN'
(Other definitions for ruin that I've seen before include "Disaster, collapse" , "Destruction or bankruptcy" , "Physical collapse" , "Wreck" , "Complete collapse or destruction" .)