Try overturning ram in field event (4,3)
I believe the answer is:
shot put
'field event' is the definition.
(shot put is a kind of field event)
'try overturning ram' is the wordplay.
'try' becomes 'shot' (both can mean an attempt).
'overturning' shows that the letters should be reversed in order.
'ram' becomes 'tup' (both can mean a male sheep).
'tup' in reverse letter order is 'put'.
'shot'+'put'='SHOT-PUT'
'in' is the link.
(Other definitions for shot put that I've seen before include "Competition in which a heavy metal ball is hurled" , "Athletic field event" , "Throwing event" , "Olympic event" , "Throwing contest" .)