Official verses and unfinished scores (8)
I believe the answer is:
linesman
'official' is the definition.
(I know that linesman is a type of official)
'verses and unfinished scores' is the wordplay.
'verses' becomes 'lines' (I can't justify this - if you can you should believe this answer much more).
'and' means one lot of letters go next to another.
'unfinished' means to remove the last letter.
'scores' becomes 'many' (a score is twenty).
'many' with its final letter taken away is 'man'.
'lines'+'man'='LINESMAN'
Can you help me to learn more?
(Other definitions for linesman that I've seen before include "sports official" , "park official" , "Court official" , "Football official" , "Male official with a flag" .)