Coach fixing the race? (7)
I believe the answer is:
teacher
'coach' is the definition.
(thesaurus)
'fixing the race?' is the wordplay.
'fixing' is an anagram indicator.
'the'+'race'='therace'
'therace' is an anagram of 'TEACHER'.
(Other definitions for teacher that I've seen before include "Member of school staff" , "Schoolmaster" , "supply?" , "The race (anag.)" , "Chips, perhaps?" .)