Event: 4-Board Division 2

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Opponent	Rating	Result
Jonathan R Slater	1550	0 - 1
Nick Whetton	1568	0 - 1
N Charles Clayton	1467	1 - 0
Sean Cooney	0	1 - 0

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

1146 = (4585 + 400 * (2 - 2)) / 4)