Event: Silver Rook

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Opponent	Rating	Result
Angelica Rowe	69	0 - 1
Elinor Gorrell	89	0 - 1
Angelica Rowe	69	0 - 1

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

-324 = (227 + 400 * (0 - 3)) / 3)