Report composed ought to include partners in play (7)
I believe the answer is:
gunshot
'report' is the definition.
(report can mean the sound of a gunshot)
'composed ought to include partners in play' is the wordplay.
'composed' is an anagram indicator.
'to include' is an insertion indicator.
'partners in play' becomes 'NS' (in bridge, players are named after compass points).
'ought' with letters rearranged gives 'guhot'.
'guhot' enclosing 'ns' is 'GUNSHOT'.
(Other definitions for gunshot that I've seen before include "Range of a specific weapon" , "Crack" , "Fire" , "Noughts (anag)" , "Source of report" .)