Event: A&B Division

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Opponent	Rating	Result
Brian R Myers	1736	0 - 1
Jim A Rogers	1627	½ - ½
Chris Swales	1665	0 - 1
Graham W Matthews	1648	0 - 1
Sahil Farooq	1612	1 - 0
James Garner	1593	1 - 0
Richard J Harris	1780	0 - 1
Iain Mellis	1534	0 - 1

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

1499 = (13195 + 400 * (2 - 5)) / 8)