Event: Lawrance Cup

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Opponent Rating Result
Jeff A Goldberg 2146 ½ - ½
Jeff A Goldberg 2146 ½ - ½
Richard Britton 2186 1 - 0
Richard Britton 2186 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2266 = (8664 + 400 * (1 - 0)) / 4)

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