You wouldn't believe where I've driven my ball to! (3)
I believe the answer is:
lie
'where i've driven my ball to' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'you wouldn't believe' is the wordplay.
'LIE' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for lie that I've seen before include "Piece of fiction" , "habitat for animal or bird" , "Be prostrate" , "Rest; deception" , "Commit perjury" .)