Event: Division 3

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Opponent Rating Result
Richard Usherwood 1485 ½ - ½
John L Paines 1381 ½ - ½
Tony Golding 1350 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1272 = (4216 + 400 * (0 - 1)) / 3)

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