Event: Examiner League

Opponent Rating Result
Karim Khan 1798 0 - 1
Leo A Keely 2094 0 - 1
Mark Rojinsky 1465 1 - 0
Dave Colledge 1784 ½ - ½
Alec Ward 205 ½ - ½
Peter Hepworth 2075 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1504 = (9421 + 400 * (1 - 2)) / 6)

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