Umpire's call sounded excessive (9)
I believe the answer is:
overblown
'excessive' is the definition.
(overblown means excessive or too much)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for overblown that I've seen before include "excessive" , "Exaggerated" , "fifteen [POMPOUS]" , "pretentious" , "bombastic" .)