Event: Club Championship

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Opponent	Rating	Result
Jo Schultz	2132	0 - 1
John B Atherton	1918	0 - 1
David Erwee	1473	0 - 1

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

1441 = (5523 + 400 * (0 - 3)) / 3)