Boxer limited by substantial injuries (3)

I believe the answer is:

ali

'boxer' is the definition.
(Muhammad Ali)

'limited by substantial injuries' is the wordplay.
'limited by' says the answer is hidden in the clue (the clue contains or limits the answer).
'ALI' can be found hidden inside 'substantial injuries'.

(Other definitions for ali that I've seen before include "US heavyweight boxer" , "Ring' specialist" , ""The Greatest" boxer" , "Muhammad ... (former fighter)" , "Muhammad ___ (or MacGraw?)" .)

I've seen this clue in The Times.

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