Event: D&DCL Div 2

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Opponent Rating Result
Justin Smith 1747 0 - 1
Vaughan WG Smith 1598 ½ - ½
Elliott Shawcross 1448 ½ - ½
Graham Smith 1474 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1467 = (6267 + 400 * (0 - 1)) / 4)

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