Evidently he makes capital love (5)
I believe the answer is:
romeo
'evidently he' is the definition.
The definition suggests a singular noun which matches the answer.
'capital love' is the wordplay.
'capital' becomes 'rome' (Rome is an example).
'love' becomes 'o' (In tennis, 'love' means 'zero').
'rome'+'o'='ROMEO'
'makes' acts as a link.
Can you help me to learn more?
(Other definitions for romeo that I've seen before include "Star-crossed lover" , "Literary lover" , "Juliet's immortal lover" , "Juliet's lover of Verona" , "Comms code for R" .)