Event: IM Brown Shield

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Opponent	Rating	Result
Richard J Webster	1945	0 - 1
Adam Ismail	1894	½ - ½
Jonathon Day	1702	0 - 1

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

1580 = (5541 + 400 * (0 - 2)) / 3)