Event: Division 2

Opponent Rating Result
Paul DL Barasi 1867 ½ - ½
Tariq Khan 1898 0 - 1
Philip Staniland 1855 0 - 1
John P Allen 1915 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1784 = (7535 + 400 * (1 - 2)) / 4)

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