No bar in riding competitions for Greek god (3)
I believe the answer is:
eos
'greek god' is the definition.
(Eos is an example)
'no bar in riding competitions' is the wordplay.
I cannot quite see how this works, but
'no' could be 'o' (resembles 0 - 'no' can mean 'zero') and 'o' is found within the answer.
The remaining letters 'es' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'for' is the link.
Can you help me to learn more?
(Other definitions for eos that I've seen before include "Greek dawn goddess" , "Greek god of the dawn" .)