Apparently not the top team (4)
I believe the answer is:
side
'team' is the definition.
(both can mean a sports team)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for side that I've seen before include "pretentious attitude" , "Spin given to a ball by striking it off-centre" , "camp" , "perspective" , "Dies (anag)" .)