Cue and hit a second cracking long shot (7,6)
I believe the answer is:
outside chance
'long shot' is the definition.
(thesaurus)
'cue and hit a second cracking' is the wordplay.
'and' says to put letters next to each other.
'cracking' indicates anagramming the letters.
'hit'+'a'+'second'='hitasecond'
'cue' put after 'hitasecond' is 'hitasecondcue'.
'hitasecondcue' with letters rearranged gives 'OUTSIDE CHANCE'.
(Other definitions for outside chance that I've seen before include "smallest likelihood" , "one at long odds" , "It might just happen" .)