He puts up the points or puts them down (6)
I believe the answer is:
scorer
'he puts up' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'points or puts them down' is the wordplay.
I cannot quite understand how this works, but
'points' could be 'score' (points in a game) and 'score' is located in the answer.
A single letter 'r' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'the' is the link.
Can you help me to learn more?
(Other definitions for scorer that I've seen before include "Sir, not one without heart as a" , "He puts up the points (or puts them down)" , "Footballer having netted" , "one making records?" , "player achieving a touchdown?" .)