Event: Division Three

Opponent Rating Result
Garry Evans 1653 ½ - ½
Keith Thomas 1825 0 - 1
Joe Kadar 1693 0 - 1
Chris M Cox 1593 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1391 = (6764 + 400 * (0 - 3)) / 4)

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