Argumentative sportsman? (5)
I believe the answer is:
rower
'sportsman?' is the definition.
I don't understand how the rest 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" .)