Event: MCA Division 3

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Opponent Rating Result
Mike McGreal 1839 ½ - ½
E Dave Williams 2000 0 - 1
Artur Hrabchak 1570 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1803 = (5409 + 400 * (1 - 1)) / 3)

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