Not admired for having scored about a quarter of the runs (7)
I believe the answer is:
scorned
'not admired for having' is the definition.
I can't judge whether this definition defines the answer.
'scored about a quarter of the runs' is the wordplay.
'about' indicates putting letters inside.
'a quarter of the runs' becomes 'n' (I can't explain this - if you can you should believe this answer much more).
'scored' placed around 'n' is 'SCORNED'.
Can you help me to learn more?
(Other definitions for scorned that I've seen before include "Derided" , "Treated with contempt" , "Dismissed" , "''Hell hath no fury like a woman .. . . . . .''" .)