Event: Division One

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Opponent Rating Result
Donald J Mason 2163 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2163 = (2163 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Amrik J Singh 1850 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2250 = (1850 + 400 * (1 - 0)) / 1)