Event: Division 1

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Opponent Rating Result
Mick D Riding 0 1 - 0
James Turner 0 1 - 0
Gary L Cornwall 0 0 - 1
Ravi Wariyar 0 ½ - ½
Mick D Riding 0 0 - 1
Jason C Daglish 0 ½ - ½
James Turner 0 ½ - ½
Gary L Cornwall 0 0 - 1
Zheming Zhang 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-89 = (0 + 400 * (2 - 4)) / 9)

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