Event: Two East

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Opponent Rating Result
Andrew H Heard 1855 ½ - ½
Peter Sturm 1608 1 - 0
Ricardo Velasco 1765 0 - 1
Richard J Nash 1915 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1786 = (7143 + 400 * (1 - 1)) / 4)

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