Spot seen on decent batter? That’s something remarkable (3-6)
I believe the answer is:
eye-opener
'something remarkable' is the definition.
(I've seen this before)
'spot seen on decent batter?' is the wordplay.
'spot' becomes 'eye' (both can mean to notice or observe).
'seen on decent batter?' becomes 'opener' (I am not sure about this - if you are sure you should believe this answer much more).
'eye'+'opener'='EYE-OPENER'
'that's' is the link.
Can you help me to learn more?
(Other definitions for eye-opener that I've seen before include "Startling revelation" , "Fact that brings great surprise, dilating optics" , "Unexpected revelation" , "A startling enlightenment!" , "Fact or circumstance that brings enlightenment and surprise" .)