Event: Division 3 - Under 6400

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Opponent	Rating	Result
Alin Ionescu	1534	0 - 1
Arthur Doble	1431	1 - 0
Jack Wills	1483	0 - 1

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

1349 = (4448 + 400 * (1 - 2)) / 3)