Event: Eton Rapidplay 2019

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Opponent Rating Result
Isaac Lam 104 ½ - ½
Anton Drel 115 1 - 0
Benjamin Hammond 157 0 - 1
Neil Stevenson 116 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

23 = (492 + 400 * (1 - 2)) / 4)

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