Event: Grand Prix S3

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Opponent Rating Result
Ewan F Corden 1277 1 - 0
Benjamin R Shiers 1450 0 - 1
Owen Frodsham 1050 1 - 0
Joseph P Alcock 1558 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1334 = (5335 + 400 * (2 - 2)) / 4)

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