Event: Division 3

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Opponent	Rating	Result
John A Figgins	1651	½ - ½
Graham J Kershaw	1712	0 - 1
David Ruppert	1575	0 - 1
Jake Maguire	0	0 - 1
Lalitranjan Vigneswaran	1120	1 - 0
Zain Qureshi	1482	1 - 0
Svetlana Hurrell	1000	1 - 0

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

1220 = (8540 + 400 * (3 - 3)) / 7)