Event: Division 3

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Opponent	Rating	Result
John S Marsh	1681	0 - 1
Alex Johnson	1455	½ - ½
Kai Harkensee	1300	0 - 1

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

1212 = (4436 + 400 * (0 - 2)) / 3)