A scorer briefly crossing a sort of green, one at the White House once (7,7)

I believe the answer is:

abraham lincoln

'one at the white house once' is the definition.

I can't explain the rest of the clue.

(Other definitions for abraham lincoln that I've seen before include "fatally, he watched some play" , "Famous American" , "president" .)

I've seen this clue in The Times.

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