Event: Division 2

Opponent Rating Result
Harry Myring 1836 ½ - ½
Paul Silverman 1665 ½ - ½
Christopher Badley 1443 1 - 0
Arnold Peace 1703 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1862 = (6647 + 400 * (2 - 0)) / 4)

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