Event: 4-Board Division 2

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Opponent	Rating	Result
Jim Miklevicz	1608	1 - 0
Tim M Turner	1893	0 - 1
Olegs Dukalevs	1728	0 - 1
Richard Atkinson	1563	½ - ½

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

1598 = (6792 + 400 * (1 - 2)) / 4)