Team having only clubs? (3,6)

I believe the answer is:

all blacks

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'team' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for all blacks that I've seen before include "New Zealand's International rugby team" , "Colourless New Zealand rugby team?" , "Essential component of maximum break" , "The New Zealand national rugby team" , "New Zealand rugby team, very sombre" .)

I've seen this clue in The Guardian.

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