Extremely brave team succeeded as well (7)
I believe the answer is:
besides
'as well' is the definition.
(both can mean 'in addition')
'extremely brave team succeeded' is the wordplay.
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'team' becomes 'side' (both can mean a sports team).
'succeeded' becomes 's' (genealogical abbreviation).
'brave' with its middle taken out is 'be'.
'be'+'side'+'s'='BESIDES'
(Other definitions for besides that I've seen before include "also is available" , "Moreover" , "Apart from" , "What's more" , "In addition, as well" .)