Playing at Rod Laver, not under a roof? (2,3,4)
I believe the answer is:
in the open
'not under a roof?' is the definition.
I can't judge whether this defines the answer.
'playing at rod laver' is the wordplay.
'playing' becomes 'in'.
'at' means one lot of letters go next to another.
'rod laver' becomes 'theopen' (I am not sure about this - if you are sure you should believe this answer much more).
'in'+'theopen'='IN THE OPEN'
Can you help me to learn more?
(Other definitions for in the open that I've seen before include "Overtly" , "Made public" , "Laid bare" .)