Event: Spring OTB Division 4

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Opponent Rating Result
Geoff Swallow 1580 0 - 1
Dave S Almond 1730 0 - 1
John Hennessy 1563 ½ - ½
Antony Doust 1458 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1283 = (6331 + 400 * (0 - 3)) / 4)

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