Cricket ball that would land one in hospital (3,5)

I believe the answer is:

leg break

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'cricket ball' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for leg break that I've seen before include "Type of spin at cricket" , "Spinning ball (cricket)" , "Switch from on to off" , "injury" , "(In cricket) ball turning to the left on pitching" .)

I've seen this clue in The Times.

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