Event: IM Brown Shield

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Opponent	Rating	Result
Ben Moran	1563	0 - 1
Joey Fell	1369	1 - 0
Benedikt Pitel	1828	1 - 0

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

1720 = (4760 + 400 * (2 - 1)) / 3)