Event: Division 3

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Opponent Rating Result
Albertas Bartasiunas 1489 0 - 1
George Courtney-Holt 1643 0 - 1
Robert Lacey 1400 0 - 1
Agatha Moore 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

933 = (4532 + 400 * (1 - 3)) / 4)

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