Better than average sort of pea — bravo! (5,3)
I believe the answer is:
above par
'better than average' is the definition.
(I've seen this before)
'sort of pea bravo' is the wordplay.
'sort of' indicates anagramming the letters.
'pea'+'bravo'='peabravo'
'peabravo' is an anagram of 'ABOVE PAR'.
(Other definitions for above par that I've seen before include "at a premium" , "bad score on course" , "better than expected" , "More than the standard" , "Better than the norm" .)