Event: Division 1

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Opponent Rating Result
Stephen C Ledger 2130 0 - 1
Adam Robinson 1978 0 - 1
Meri Grigoryan 2044 0 - 1
Susan K Lalic 2263 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1704 = (8415 + 400 * (0 - 4)) / 4)

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