Against Hoovers using bags (6)

I believe the answer is:

versus

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'against' is the definition.
(as in one sports team versus another)

I don't understand how the rest of the clue works.

(Other definitions for versus that I've seen before include "Against in games" , "Against (opponent)" , "Preposition meaning against, as in contest" , "playing" , "Against (another team)" .)

I've seen this clue in The Telegraph and The Times.

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