Event: Library Rapidplay June

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Opponent	Rating	Result
Agam Vats	661	0 - 1
Clair Hartill	1275	0 - 1
Joseph Hartill	1006	0 - 1

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

581 = (2942 + 400 * (0 - 3)) / 3)