Event: Cambs Division 2

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Opponent	Rating	Result
Michael R English	1412	0 - 1
Chris J Russell	1598	0 - 1
James AS Sutherland	1450	0 - 1
Brendan Rooney	1669	0 - 1
Daniel Finch	1485	1 - 0
Michael R English	1412	0 - 1
Matthew Cooper	1569	0 - 1
Peter C Wells	1475	1 - 0
Peter Baddeley	1617	0 - 1
Matthew Cooper	1569	½ - ½
Isaac Kim	1412	0 - 1

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

1297 = (16668 + 400 * (2 - 8)) / 11)