Event: Division 2

Opponent Rating Result
James M Robinson 1903 0 - 1
Peter Biggs 1686 ½ - ½
Paul R Barclay 1804 ½ - ½
Ken Groce 1700 1 - 0
Mustapha Rahaman 1667 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1752 = (8760 + 400 * (1 - 1)) / 5)

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