Ball location, a bit unbelievable? (3)

I believe the answer is:

lie

I'm a little stuck... Click here to teach me more about this clue!

'ball location' is the definition.
'lie' can be an answer for 'location' (lie is a kind of location). I'm not sure about the 'ball' bit.

'a bit unbelievable?' is the wordplay.
'a bit' says the answer is hidden in the clue (I've seen 'bit of' mean this).
'LIE' is hidden within 'unbelievable'.

Can you help me to learn more?

(Other definitions for lie that I've seen before include "Couch" , "Fabrication" , "Rest; deception" , "Rest; falsehood" , "Pork pie" .)

I've seen this clue in the Evening Standard.

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