Event: Division 3

Opponent Rating Result
Nigel Wilcox 1604 0 - 1
James Thomas 1420 ½ - ½
Barry Raynes 1592 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1539 = (4616 + 400 * (1 - 1)) / 3)

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