Event: D&DCL Plate QP

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Opponent	Rating	Result
Graeme Drayton	980	1 - 0
Paul Williams	1657	1 - 0
David Hatton	1667	1 - 0

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

1835 = (4304 + 400 * (3 - 0)) / 3)