Defeat with six balls in cricket pitch (9)
I believe the answer is:
overthrow
'defeat' is the definition.
(I've seen this before)
'with six balls in cricket pitch' is the wordplay.
'with' means one lot of letters go next to another.
'six balls in cricket' becomes 'over' (I've seen this before).
'pitch' becomes 'throw' (I've seen this in another clue).
'over'+'throw' is 'OVERTHROW'.
(Other definitions for overthrow that I've seen before include "Bring down (government)" , "Worst" , "Vanquish" , "Defeat completely" , "destruction" .)