Event: Division 4

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Opponent	Rating	Result
Robert Heyman	1561	0 - 1
Jacob Manley	1495	1 - 0
David Stewardson	1587	0 - 1

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

1414 = (4643 + 400 * (1 - 2)) / 3)