Nobleman right one in club (7)
I believe the answer is:
baronet
'nobleman' is the definition.
(I've seen this before)
'right one in club' is the wordplay.
'right' becomes 'r' (common abbreviation).
'in' is an insertion indicator.
'club' becomes 'bat' (as in sporting equipment).
'r'+'one'='rone'
'rone' put within 'bat' is 'BARONET'.
(Other definitions for baronet that I've seen before include "A Bronte (anag.)" , "One's entitled" , "Lower noble" , "Member of the British order of honour" , "Lowest hereditary title of honour" .)