Event: Wahltuch

Opponent Rating Result
Sajjad Dehghan-Afifi 1788 1 - 0
Steven M Flaherty 1608 ½ - ½
Christopher Hodgson 1736 1 - 0
Andrew Lewis 1903 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1959 = (7035 + 400 * (2 - 0)) / 4)

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