'Ramps' reappearing as a tennis player! (7)
I believe the answer is:
sampras
'a tennis player' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'ramps reappearing as' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'ramps' is 'sampr' which is present in the answer.
'as' is present in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sampras that I've seen before include "Champion tennis player" , "Seven times Wimbledon winner" , "Former champion" , "Pete --, tennis player" .)