Event: Bill Lumley Rapidplay

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Opponent Rating Result
Nigel R Hepworth 131 0 - 1
Simon Skinner 116 1 - 0
Dave Gray 156 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1 = (403 + 400 * (1 - 2)) / 3)

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