Event: Division 4 - Under 6000

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Opponent	Rating	Result
Jack Chen	1452	1 - 0
Jack Chen	1340	1 - 0
George McNally	1300	1 - 0

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

1764 = (4092 + 400 * (3 - 0)) / 3)