Event: D&DCL Plate QP

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Opponent	Rating	Result
Chris Lovell	1732	0 - 1
Jon Jenson	1541	½ - ½
Kevin J Gallagher	1617	0 - 1
Tony O'Donovan	1368	0 - 1

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

1265 = (6258 + 400 * (0 - 3)) / 4)