As a consequence, discussed sport movie airing (9)
I believe the answer is:
whereupon
'as a consequence' is the definition.
(I've seen this in another clue)
'discussed sport movie airing' is the wordplay.
'discussed' indicates a 'sounds like' (homophone) clue.
'sport' becomes 'wear' (sport can mean to wear or display on one's person).
'movie airing' becomes 'upon' (I am not sure about this - if you are sure you should believe this answer much more).
'wear' sounds like 'where'.
'where'+'upon'='WHEREUPON'
Can you help me to learn more?
(Another definition for whereupon that I've seen is " At which point".)