Event: Division 2 West

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Opponent Rating Result
Jon Duckham 158 ½ - ½
Kevin J Thurlow 179 1 - 0
Edward P Small 147 1 - 0
Kevin J Thurlow 179 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

466 = (663 + 400 * (3 - 0)) / 4)

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