Event: Division One

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Opponent Rating Result
Irvin B Ortega 214 1 - 0
Lawrence H Cooper 218 ½ - ½
Adam Szelc 181 1 - 0
Nigel K Hosken 189 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

501 = (802 + 400 * (3 - 0)) / 4)

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