Event: SCCA Division 3

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Opponent	Rating	Result
Craig Bradshaw	1353	0 - 1
Geoff Lilley	0	1 - 0
Philip J Chapman	1263	½ - ½

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

872 = (2616 + 400 * (1 - 1)) / 3)