Event: Division 2

Opponent Rating Result
Ian P Morgan 1813 1 - 0
Alan Reynolds 1533 1 - 0
Mae C Catabay 1657 0 - 1
Lyn Stiffell 1581 ½ - ½
Lyn Stiffell 1563 ½ - ½
Colin R Moore 1800 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1658 = (9947 + 400 * (2 - 2)) / 6)

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