Team when following up creates advantage (4)
I believe the answer is:
side
'team' is the definition.
(both can mean a sports team)
'when following up creates advantage' is the wordplay.
'when' becomes 'e' (I've seen this in other clues).
'following up' means one lot of letters go next to another.
'creates advantage' becomes 'sid' (I can't explain this - if you can you should believe this answer much more).
'e' put after 'sid' is 'SIDE'.
Can you help me to learn more?
(Other definitions for side that I've seen before include "faction" , "TV channel" , "Manchester United, for example?" , "Lateral team" , "Team - arrogance" .)