One follows one team (6)
I believe the answer is:
eleven
'one team' is the definition.
(I know that eleven is a type of team)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for eleven that I've seen before include "Players" , "Cardinal" , "Number, on a team perhaps" , "sports team?" , "Time for the mid-morning tea break?" .)