Event: Division 1

Opponent Rating Result
John H Hodgson 2152 ½ - ½
Michael St J Brown 1976 ½ - ½
Susan K Lalic 0 ½ - ½
David A Morgan 1656 1 - 0
Peter F Anderson 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1237 = (5784 + 400 * (1 - 0)) / 5)

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