Event: R Division

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Opponent Rating Result
Iain Summers 1300 0 - 1
Stephen Eddleston 1446 0 - 1
Iain Summers 1300 0 - 1
Stephen Eddleston 1446 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

973 = (5492 + 400 * (0 - 4)) / 4)

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