Event: Silver Rook

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Opponent	Rating	Result
Dave Young	1365	0 - 1
Christopher Lund	1671	½ - ½
Kenneth L Marsden	1371	1 - 0

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

1469 = (4407 + 400 * (1 - 1)) / 3)