Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Richard Dawson	1499	½ - ½
Connor Fairfield	1195	1 - 0
Alec Nussey	1682	0 - 1
Brian D Stephenson	1323	1 - 0
Gerald R Thickett	1465	1 - 0
Zilu Ji	1091	1 - 0
Connor Fairfield	1195	1 - 0

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

1579 = (9450 + 400 * (5 - 1)) / 7)