Event: Division 4

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Opponent Rating Result
Paul Capstick 1330 1 - 0
Richard Kelly 1774 ½ - ½
James Redman 1219 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1708 = (4323 + 400 * (2 - 0)) / 3)

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