Man gets unusual score in the open (8)
I believe the answer is:
alfresco
'in the open' is the definition.
(I've seen this before)
'man gets unusual score' is the wordplay.
'man' becomes 'alf' (I've seen this before).
'gets' is a charade indicator (letters next to each other).
'unusual' is an anagram indicator.
'score' with letters rearranged gives 'resco'.
'alf'+'resco'='ALFRESCO'
(Other definitions for alfresco that I've seen before include "Outdoors, meal perhaps" , "Outside" , "where it's cool" , "out of the house" , "Located outdoors" .)