Event: SCCA Division 1 Rapidplay Cup

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Opponent Rating Result
Andrew P Lewis 2249 ½ - ½
Andrew P Lewis 2249 0 - 1
Stephen Lewis 1953 0 - 1
Stephen Lewis 1953 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2001 = (8404 + 400 * (1 - 2)) / 4)

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