Event: Silver Rook

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Opponent	Rating	Result
Colin Frank	1524	0 - 1
Elinor Gorrell	1641	0 - 1
Adrian Lee	1714	0 - 1

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

1226 = (4879 + 400 * (0 - 3)) / 3)