Event: Division 3

Opponent Rating Result
John P Allen 1915 ½ - ½
Robert C Stern 1951 0 - 1
Roman Ismailov 2031 0 - 1
Tom Townsend 1927 ½ - ½
Inga Jirgensone 1452 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1695 = (9276 + 400 * (0 - 2)) / 5)

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