Homeric quote you cut short in ring with heavyweights (5)

'ring with heavyweights' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'homeric quote you cut short' is the wordplay.
'homeric quote' becomes 'doh' (I am not sure about this - if you are sure you should believe this answer much more).
'cut short' means to remove the last letter.
'you' with its last letter taken off is 'yo'.
'doh'+'yo'='DOHYO'

'in' is the link.

Can you help me to learn more?