Event: 6-Board Division 2

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Opponent	Rating	Result
Alec Grice	1628	0 - 1
N Charles Clayton	1463	1 - 0
Philip A Wood	1551	½ - ½

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

1547 = (4642 + 400 * (1 - 1)) / 3)