Event: Two East

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Opponent Rating Result
Peter Jaszkiwskyj 1990 ½ - ½
Wilson Ransome 1600 1 - 0
Matthew J Hortin 1930 ½ - ½
Robert Parker 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1580 = (5520 + 400 * (2 - 0)) / 4)

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