Event: 4-board Division 3

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Opponent Rating Result
Dan Malbon 1400 ½ - ½
Shaun Moody 1161 ½ - ½
Ronald Botham 1112 ½ - ½
Daniel Leigh 1250 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1331 = (4923 + 400 * (1 - 0)) / 4)

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