Enclosed in the team (6)

I believe the answer is:

inside

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'enclosed' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?

'in the team' is the wordplay.
'the team' becomes 'side' (both can mean a sports team).
'in'+'side'='INSIDE'

Can you help me to learn more?

(Other definitions for inside that I've seen before include "Inner surface" , "Behind bars (sl.)" , "Imprisoned" , "Not external, perhaps in prison" , "(Of information) from a confidential source" .)

I've seen this clue in the Sydney Morning Herald.

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