Event: Division One

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Opponent Rating Result
Christopher J Marshall 0 0 - 1
Gayara Seekkuge 131 ½ - ½
Jeevan George 0 1 - 0
Zain Aslam 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

133 = (131 + 400 * (2 - 1)) / 4)

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