Event: Division 1

Opponent Rating Result
Andrew I Paterson 2117 ½ - ½
Joshua Pink 2025 0 - 1
Gary C Jackson 1903 ½ - ½
Jonathan Dale 1919 1 - 0
Tom Darling 1932 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1979 = (9896 + 400 * (1 - 1)) / 5)

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