Event: Division 3

Opponent Rating Result
Peter Newton 1640 1 - 0
Danny Harrison 1600 ½ - ½
Michael E Usher 1784 ½ - ½
David Robertson 1380 ½ - ½
Tom Gordon 1500 ½ - ½
David Robertson 1386 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1548 = (9290 + 400 * (1 - 1)) / 6)

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