Delivers with no trouble at all (5,4)
I believe the answer is:
hands down
'trouble at all' is the definition.
I know nothing about this answer so I can't judge whether this works.
'delivers with no' is the wordplay.
I cannot really understand how this works, but
'with' could be 'and' and 'and' is found in the answer.
'no' could be 'o' (resembles 0 - 'no' can mean 'zero') and 'o' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for hands down that I've seen before include "extremely easily" , "without effort" , "without difficulty" , "Common teaching command" , "Teacher's instruction after question's answered" .)