Unorthodox batter supporting cricket side (7)
I believe the answer is:
offbeat
'unorthodox' is the definition.
(I've seen this before)
'batter supporting cricket side' is the wordplay.
'batter' becomes 'beat'.
'supporting' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'cricket side' becomes 'off'.
'beat' put after 'off' is 'OFFBEAT'.
(Other definitions for offbeat that I've seen before include "Unusual or unconventional - perhaps in music" , "Way-out" , "Weird - irregular" , "Odd, unconventional" , "Strange" .)