Event: Examiner League

Opponent Rating Result
Leo A Keely 2094 0 - 1
Dave Colledge 1792 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (3886 + 400 * (0 - 2)) / 2)

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Opponent Rating Result
John G Taylor 1250 1 - 0
Steve Harrington 1617 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1834 = (2867 + 400 * (2 - 0)) / 2)