Just the club for an upright fellow (4)
I believe the answer is:
iron
'just the club' is the definition.
I can't judge whether this defines the answer.
'an upright fellow' is the wordplay.
'an' becomes 'i' (Roman numeral for one).
'upright fellow' becomes 'ron' (masculine given name. I am not sure about the 'upright' bit.).
'i'+'ron'='IRON'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for iron that I've seen before include "Revolver" , "Press - element" , "Metal - press" , "Metallic chemical element" , "medicinal preparation for the anaemic?" .)