Event: Division 1

Opponent Rating Result
Andrew D Harley 2146 0 - 1
Jonathan Rubeck 1945 0 - 1
Neil D Tomkin 1686 1 - 0
Andrew Medworth 1756 ½ - ½
Michael PL Inzani 1977 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1902 = (9510 + 400 * (2 - 2)) / 5)

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