Commentator’s name for champs (5)
I believe the answer is:
chews
'commentator's name for champs' is the definition.
I can't tell whether this defines the answer.
'name for champs' is the wordplay.
'name' becomes 'Che'.
'for champs' becomes 'ws' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'che'+'ws'='CHEWS'
Can you help me to learn more?
(Other definitions for chews that I've seen before include "Masticates" , "Does something with tooth" , "bites" , "toffees" .)