Event: Division 3

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Opponent	Rating	Result
Dominic Douse	1400	1 - 0
Bernard Ross	1291	0 - 1
Mark Webb	1429	0 - 1
Piotr Dolewka	1526	1 - 0
Mark Webb	1459	0 - 1
Hugo E Brown	1317	0 - 1
Martyn Colebrook	1483	0 - 1
Emile Kosviner	1264	1 - 0

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

1296 = (11169 + 400 * (3 - 5)) / 8)