Event: Eton Rapidplay 2019

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Opponent Rating Result
Piers Chambers 48 1 - 0
Ben McCallion 88 0 - 1
Anthony Fox 144 ½ - ½
Devin Karia 138 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

205 = (418 + 400 * (2 - 1)) / 4)

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