Event: Division 2

Opponent Rating Result
Mike Roberts 1515 1 - 0
Antony J Sage 1546 1 - 0
Tom Weale 1548 0 - 1
Chris P Smith 1488 ½ - ½
Chris J Edwards 1716 0 - 1
Jack Lintern 1629 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1507 = (9442 + 400 * (2 - 3)) / 6)

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