Excitedly to race pro associated with group (9)
I believe the answer is:
corporate
'associated with group' is the definition.
'excitedly to race pro' is the wordplay.
'excitedly' indicates anagramming the letters.
'to'+'race'+'pro'='toracepro'
'toracepro' anagrammed gives 'CORPORATE'.
(Other definitions for corporate that I've seen before include "Relating to a large group; united" , "Poor crate could be legally united into a body" , "Relating to a large group or company" , "belonging to a large company" , "Joint" .)