Record what a tennis player hopes not to be (3,4)

I believe the answer is:

set down

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

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

(Other definitions for set down that I've seen before include "judge" , "player's position at Wimbledon, perhaps" , "position of losing tennis player" , "is allowed to alight" , "Snub" .)

I've seen this clue in The Times.

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