Event: Division 2

Opponent Rating Result
Jeffrey Page 1644 1 - 0
Antony C Hall 1849 ½ - ½
Dmitry Kolobkov 0 1 - 0
Andrew Barrowman 0 1 - 0
Peter A Nickals 1728 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1364 = (5221 + 400 * (4 - 0)) / 5)

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