Crossword Genius

Thus might half-back transfer responsibiity (4,3,4)

Ross

I believe the answer is:

pass the ball

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

'thus might half-back' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'transfer responsibiity' is the wordplay.
I cannot really see how this works, but
'transfer' could be 'pass' (passing is a kind of transfering) and 'pass' is found within 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 Sydney Morning Herald.
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