Event: Division RP1

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Opponent Rating Result
Timothy Mowlem 1669 ½ - ½
Helen M Frostick 1678 1 - 0
Timothy Mowlem 1669 0 - 1
Helen M Frostick 1678 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1774 = (6694 + 400 * (2 - 1)) / 4)

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