Event: MCA Division 3

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Opponent Rating Result
Brian D Corner 1482 0 - 1
Colin Dougherty 1570 ½ - ½
Raymond Weedall 1638 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1297 = (4690 + 400 * (0 - 2)) / 3)

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