Event: Division 3 - Under 6400

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Opponent Rating Result
Oliver Quartley 1650 0 - 1
Philip A Lochhead 1586 0 - 1
Anthony Tatam 1528 0 - 1
Richard Brenton 1574 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1285 = (6338 + 400 * (0 - 3)) / 4)

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