Event: Division 3

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Opponent Rating Result
David W Fone 1597 ½ - ½
Alex D Pready 1789 0 - 1
Michael WA Hoare 1609 ½ - ½
Bradley Vanian 1200 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1549 = (6195 + 400 * (1 - 1)) / 4)

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