Regally, he's a match for Reg! (3)

I believe the answer is:

roy

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'regally he's a match for reg' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

Can you help me to learn more?

(Other definitions for roy that I've seen before include "'Rob ..., ... Rogers (3)'" , "Rob --, Scots outlaw" , "-- Hattersley; -- Jenkins" , "Man" , "Rob . . . was a famous Scottish outlaw" .)

I've seen this clue in the Evening Standard.

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