Ball beats me! (4)
I believe the answer is:
pass
This clue could be a double definition.
'ball' is the first definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'beats me' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for pass that I've seen before include "asked for permission to enter" , "way through mountains" , "OK" , "Eg, Khyber, Brenner" , "Amorous advance" .)