Event: Division 4

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Opponent Rating Result
Lucretia De Lacey 0 0 - 1
Stefan Walentowicz 1930 0 - 1
Marian Talmacel 1600 0 - 1
Stephen Humphreys 1499 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1057 = (5029 + 400 * (1 - 3)) / 4)

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