Event: A Division

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Opponent Rating Result
David Burgess 1895 0 - 1
Anthony Oldham 1471 ½ - ½
Adam Tyton 1901 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1489 = (5267 + 400 * (0 - 2)) / 3)

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