Puts down on paper remarkable sporting achievements? (7)
I believe the answer is:
records
This clue is a double definition.
'puts down on paper' is the first definition.
(to put down on paper is to record)
'remarkable sporting achievements?' is the second definition.
(record-breaking achievements)
(Other definitions for records that I've seen before include "Annotations of events" , "LPs, e.g." , "Discs" , "Archives" , "Files" .)