Event: Division 2

Opponent Rating Result
Danny Harrison 1632 1 - 0
Timothy J Wesson 1817 ½ - ½
Mark J Weidman 1605 1 - 0
Robert L Jones 1681 ½ - ½
Simon Webber 1706 ½ - ½
Les J Jones 1700 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1890 = (10141 + 400 * (3 - 0)) / 6)

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