Event: Division 1

Opponent Rating Result
Maurice J Staples 1989 ½ - ½
Robert Fell 1747 1 - 0
Phil Bull 1873 0 - 1
Phil Bull 1873 0 - 1
Anthony J Green 1887 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1794 = (9369 + 400 * (1 - 2)) / 5)

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