Event: Division 3

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Opponent Rating Result
Ross Murphy 1703 ½ - ½
Richard Chillcott 1744 0 - 1
Nigel D Marshall 1558 0 - 1
R (Bob) Abrahart 1584 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1347 = (6589 + 400 * (0 - 3)) / 4)

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