Pre-match game caught by cross mischief-maker (5,10)
I believe the answer is:
robin goodfellow
'mischief-maker' is the definition.
(I've seen this before)
'pre-match game caught by cross' is the wordplay.
I cannot really see how this works, but
'match' could be 'go' (I've seen this in other clues) and 'go' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for robin goodfellow that I've seen before include "Puck" , "Prankster" , "Brownie" , "Mischief-maker" , "Shakespearean knave" .)