Caution from coppers covering game day (8)
I believe the answer is:
prudence
'caution' is the definition.
(I've seen this before)
'coppers covering game day' is the wordplay.
'coppers' becomes 'pence' (copper can mean a penny coin).
'covering' indicates putting letters inside.
'game' becomes 'RU' (rugby union).
'day' becomes 'd' (abbreviation for day).
'ru'+'d'='rud'
'pence' enclosing 'rud' is 'PRUDENCE'.
'from' acts as a link.
(Other definitions for prudence that I've seen before include "Caution or shrewdness" , "Wise caution" , "Quality of being cautious and sensible, and a girl's name" , "Caution; wisdom" , "A woman < 's > circumspection" .)