Event: Max 400

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Opponent Rating Result
Chris East 115 0 - 1
Martin J Draper 104 0 - 1
Chris East 115 1 - 0
Martin J Draper 104 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

10 = (438 + 400 * (1 - 2)) / 4)

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