Where you might find the players from the start? (5)

I believe the answer is:

onset

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'the start?' is the definition.
(onset is a kind of start)

I don't understand the remainder of the clue.

(Other definitions for onset that I've seen before include "origin" , "Storming" , "Beginning or early stages" , "Start - attack" , "Beginning (of disease etc)" .)

I've seen this clue in the Irish Times.

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