Event: U1800 Championship

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Opponent	Rating	Result
Allan Hutton	1548	½ - ½
Duncan Marshall	1615	1 - 0
Louis Cowell	1700	1 - 0
Dwijen Shilu	1764	1 - 0
Allan Hutton	1573	1 - 0
Duncan Marshall	1610	0 - 1
Louis Cowell	1661	½ - ½
Dwijen Shilu	1768	½ - ½

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

1805 = (13239 + 400 * (4 - 1)) / 8)