Event: Open County Championship

Opponent Rating Result
Okwose Marc Obi 1938 1 - 0
Haroon Majeed 1955 0 - 1
Paul McMahon 1920 ½ - ½
Mahmoud Dairi 0 1 - 0
Edward Matthewson 1956 1 - 0
Aarnavh Trivedi 1965 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1689 = (9734 + 400 * (3 - 2)) / 6)

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