Crossword Genius

Seeing less impressive performance (7)

Ross

I believe the answer is:

blinder

'performance' is the definition.
(I have seen 'Outstanding performance' mean 'blinder' so perhaps 'performance' could also mean 'blinder')

I can't explain the remainder of the clue.

(Other definitions for blinder that I've seen before include "Spectacular sporting performance" , "Spectacularly good sporting performance" , "Excellent piece of play" , "Star performance" , "the boy in "Equus"?" .)

I've seen this clue in The Times.
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