Run to right of champion (4)
I believe the answer is:
race
'run' is the definition.
(synonyms)
'right of champion' is the wordplay.
'right of' becomes 'r' (I can't justify this - if you can you should give a lot more credence to this answer).
'champion' becomes 'ace' (I've seen this before).
'r'+'ace'='RACE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for race that I've seen before include "Participate in speed contest" , "Rush" , "Competitive speed trial" , "eg The Oaks" , "See 23" .)