Event: Atkinson Cup

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Opponent Rating Result
Steve J Thrower 1457 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1057 = (1457 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Stephen Garner 1426 0 - 1
N Charles Clayton 1490 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1458 = (2916 + 400 * (1 - 1)) / 2)