Event: Examiner League

Opponent Rating Result
Daniel Czerniuch 1315 1 - 0
Vivien Webster 1638 ½ - ½
David Booth 1736 ½ - ½
Mark Rojinsky 1462 ½ - ½
Steve Harrington 1617 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1634 = (7768 + 400 * (1 - 0)) / 5)

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