Event: Holly & the Ivy Chess League

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Opponent Rating Result
Steve Harrington 1610 ½ - ½
Joshua Lewis 1561 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1386 = (3171 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Brendan Briggs 92 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-308 = (92 + 400 * (0 - 1)) / 1)