Event: MCA Division 1

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Opponent Rating Result
Ron Harrison 1820 1 - 0
James N Hawkins 1870 ½ - ½
Colin D Horton 2049 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2180 = (5739 + 400 * (2 - 0)) / 3)

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