Event: 4-Board Division 2

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Opponent	Rating	Result
N Charles Clayton	1480	0 - 1
Sean Smith	1150	½ - ½
Alistair Newton	1075	1 - 0
Steve J Thrower	1353	0 - 1
Christopher J Harris	1400	0 - 1
Derek A Sheppard	1698	0 - 1

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

1159 = (8156 + 400 * (1 - 4)) / 6)