Event: Division 2

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Opponent	Rating	Result
Ian Dennis	1680	0 - 1
Paul J Edwards	1728	0 - 1
Dejan Lekic	1672	½ - ½

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

1427 = (5080 + 400 * (0 - 2)) / 3)