Event: Essex OL Open Championship

Opponent Rating Result
Martin Van Tol 1803 0 - 1
James Evans 1635 ½ - ½
Tom A Barton 1911 0 - 1
Nandi Korossy 1601 1 - 0(def)
George Horan 1871 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1705 = (7220 + 400 * (1 - 2)) / 4)

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