Event: Division 3

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Opponent Rating Result
Natasha May 1417 1 - 0
Tom Plews 1547 1 - 0
Tony K Blades 1571 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1778 = (4535 + 400 * (2 - 0)) / 3)

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