Argumentative sportsman? (5)

I believe the answer is:

rower

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'sportsman?' is the definition.
(I know that rower is a type of sportsman)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for rower that I've seen before include "One in eight, perhaps" , "Stroke with blade" , "One who argues" , "Waterman" , "crew member, perhaps" .)

I've seen this clue in The Mirror and The Daily Express.

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