Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Lachlan Watson	0	1 - 0
Jonathan Ferguson	1626	0 - 1
Oliver West	1543	1 - 0
Byron Walker-Mills	0	1 - 0
Michael P Freund	1627	1 - 0
Oliver West	1543	1 - 0
John N Stevens	1571	1 - 0
Will Winlow	1610	½ - ½

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

1440 = (9520 + 400 * (6 - 1)) / 8)