Event: SCCA Division 3 19/20

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Opponent Rating Result
William Gu 113 0 - 1
John WF McAllister 125 ½ - ½
Ken Lunn 115 1 - 0
Michael Pepper 94 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

12 = (447 + 400 * (1 - 2)) / 4)

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