Bury game -- training cut short (9)
I believe the answer is:
interrupt
'cut short' is the definition.
(thesaurus)
'bury game training' is the wordplay.
'bury' becomes 'inter' (I've seen this before).
'game' becomes 'ru' (rugby union).
'training' becomes 'pt'.
'inter'+'ru'+'pt'='INTERRUPT'
(Other definitions for interrupt that I've seen before include "middle of ashtray after burning slip gets put out" , "Break the continuity of" .)