What Test opening batsmen aim to do to overshadow? (4,3,5,3)

I believe the answer is:

take the shine off

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'what test opening batsmen' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'aim to do to overshadow?' is the wordplay.
I cannot quite understand how this works, but
'aim' could be 'take' (synonyms) and 'take' is found in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Hindu.

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