Finish ahead after series of successful pots (5,2)
I believe the answer is:
break up
'finish' is the definition.
(I've seen this before)
'ahead after series of successful pots' is the wordplay.
'ahead' becomes 'up' (similar in meaning).
'after' is a charade indicator (letters next to each other).
'series of successful pots' becomes 'break' (I can't explain this - if you can you should give a lot more credence to this answer).
'up' after 'break' is 'BREAK-UP'.
Can you help me to learn more?
(Other definitions for break up that I've seen before include "Terminate relationship - shatter it" , "Separate" , "ahead after run of successful pots" , "A split" , "Finish school or a relationship" .)