Event: Division Two

Opponent Rating Result
John A Edge 2037 1 - 0
Peter R Kitson 2022 0 - 1
John Mildenhall 1930 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1863 = (5989 + 400 * (1 - 2)) / 3)

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