Event: Division 4

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Opponent Rating Result
Karol Grzybowski 134 0 - 1
Lukasz Holcman 123 0 - 1
David P Price 125 0 - 1
Amy Lovatt 118 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-275 = (500 + 400 * (0 - 4)) / 4)

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