Excellent and wise person producing big American event (5,4)
I believe the answer is:
super bowl
'big american event' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'excellent and wise person' is the wordplay.
'excellent' becomes 'superb' (I've seen this before).
'and' says to put letters next to each other.
'wise person' becomes 'owl' (I've seen this before).
'superb'+'owl'='SUPER BOWL'
'producing' acts as a link.
Can you help me to learn more?
(Other definitions for super bowl that I've seen before include "American sporting event" , "match across the pond" , "NFL championship match" , "big game in US" , "annual championship game" .)