Still batting, cricket side about to flog (3,3)
I believe the answer is:
not out
'still batting' is the definition.
(I've seen this before)
'cricket side about to flog' is the wordplay.
'cricket side' becomes 'on' (cricket term, on or leg side).
'about' is a reversal indicator.
'to flog' becomes 'tout' (I am not sure about this - if you are sure you should believe this answer much more).
'on' in reverse letter order is 'no'.
'no'+'tout'='NOT-OUT'
Can you help me to learn more?
(Other definitions for not out that I've seen before include "Decision in batsman's favour" , "Decision favourable to batsman" , "Refusal of an appeal?" .)