Event: SCCA Division 3 19/20

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Opponent	Rating	Result
William Moody	97	0 - 1
Theo Pommier	0	1 - 0
Craig Bradshaw	74	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

57 = (171 + 400 * (1 - 1)) / 3)