Cunning manipulating fault to steal run (6)
I believe the answer is:
artful
'cunning' is the definition.
('artful' can be similar in meaning to 'cunning')
'manipulating fault to steal run' is the wordplay.
'manipulating' indicates anagramming the letters (I've seen this in other clues).
'to steal' means one lot of letters goes inside another.
'run' becomes 'r' (cricket abbreviation).
'fault' is an anagram of 'atful'.
'atful' enclosing 'r' is 'ARTFUL'.
(Other definitions for artful that I've seen before include "Crafty or cunning" , "Unnatural - cunning" , "Clever like Dickens's Dodger" , "Cunningly clever like Dickens Dodger" , "Sly" .)