Event: 4-Board Division 2

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Opponent	Rating	Result
Hussam Al Haidar	1400	1 - 0
Lester Jones	1521	1 - 0
Thomas L Hackett	1727	0 - 1
David J Hambly	1803	½ - ½
Nick Colley	1434	½ - ½
David Atkin	1350	1 - 0
Nick Whetton	1612	0 - 1
John Thompson	1495	1 - 0

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

1643 = (12342 + 400 * (4 - 2)) / 8)