Event: 6-Board Division 2

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Opponent	Rating	Result
Luke Julyan	1650	0 - 1
Nick Whetton	1586	1 - 0
Christopher J Harris	1481	1 - 0
Jack Walker	1928	0 - 1
Thomas L Hackett	1778	0 - 1
Xiaofan Li	1734	0 - 1
Ian Flanagan	1600	1 - 0

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

1622 = (11757 + 400 * (3 - 4)) / 7)