Event: 3rd Cornwall Spring Minor

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Opponent Rating Result
Clive Liggatt 1366 0 - 1
Brett Jackson 0 0 - 1
Philip J Spargo 1453 0 - 1
Joshua Birch 1340 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

640 = (4159 + 400 * (0 - 4)) / 4)

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