Guess it's a baseball player! (8,6)

'a baseball player' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'guess' is the wordplay.
I cannot quite understand how this works, but
'guess' could be 'figure' (I've seen this before) and 'figure' is found within the answer.
The remaining letters 'ballpark' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'it's' is the link.

Can you help me to learn more?