Extraordinary row with Samoan rower (9)
I believe the answer is:
oarswoman
'rower' is the definition.
(oarswoman is a kind of rower)
'extraordinary row with samoan' is the wordplay.
'extraordinary' is an anagram indicator.
'with' is a charade indicator (letters next to each other).
'row' put after 'samoan' is 'samoanrow'.
'samoanrow' is an anagram of 'OARSWOMAN'.
(Other definitions for oarswoman that I've seen before include "River user" , "Girl having paddle" , "Rower" .)