Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Chris Lovell	0	½ - ½
Alex Porritt	0	0 - 1
John N Stevens	1571	½ - ½
Lachlan Watson	0	0 - 1
Kirin Harrington	0	0 - 1
Steven Harrison	1468	0 - 1
Thomas Hancock	1579	0 - 1

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

374 = (4618 + 400 * (0 - 5)) / 7)