Shot possibly to fail in tournament (5-2)
I believe the answer is:
close-up
'shot' is the definition.
(I've seen this before)
'to fail in tournament' is the wordplay.
'to fail' becomes 'lose' (I've seen this in other clues).
'in' means one lot of letters goes inside another.
'tournament' becomes 'cup' (eg the World Cup).
'lose' placed within 'cup' is 'CLOSE-UP'.
'possibly' acts as a link.
(Other definitions for close-up that I've seen before include "Detailed photograph of couples" , "Photograph or film taken at short range" , "Photo giving detailed view, as of actor" , "Shot of small area" , "Short-range photo" .)