Event: SCCA Division 3 19/20

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Opponent Rating Result
Peter T Housden 101 1 - 0
Michael E Usher 148 ½ - ½
William Gu 113 1 - 0
Anthony Taylor 111 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

418 = (473 + 400 * (3 - 0)) / 4)

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