the.com/blinder

means A brilliantly successful performance or piece of action, especially in sport — chiefly British slang, as in 'he played a blinder.'

from Rooted in 'blind' — something so dazzling it could blind onlookers, or so good it seems to happen almost without looking. The slang sense of a stunning success emerged in 19th/20th-century British English, with 'play a blinder' becoming especially common in sporting commentary; the exact leap from 'blinding' to 'brilliant performance' isn't precisely documented, but the dazzle logic is plain enough to trust.