Event: Division 2

Opponent Rating Result
Judith Heffer 1732 ½ - ½
Richard H Newman 0 ½ - ½
Danny Harrison 1638 1 - 0
Stuart J Jeffreys 1757 ½ - ½
Yoav Pilowsky Bankirer 1743 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1534 = (6870 + 400 * (2 - 0)) / 5)

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