Event: Division 2

Opponent Rating Result
Paul Broadley 1865 0 - 1
Ronald C Andriessen 1553 ½ - ½
Jeffrey Blumsom 1646 0 - 1
Thomas Brown 1569 1 - 0
Richard J West 1665 0 - 1
Rhys Perry 1522 0 - 1
Ronald C Andriessen 1529 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1507 = (11349 + 400 * (2 - 4)) / 7)

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