Event: A Division

Opponent Rating Result
Lorand Sakic 1990 0 - 1
Adam Scoular 1905 0 - 1
Ilya Dubov 1963 ½ - ½
Philip Armstrong 1975 ½ - ½
Philip Armstrong 1975 0 - 1
Austin C Elliott 1918 1 - 0
Neville Barnes 1860 0 - 1
Kelechukwu Nkwonta 1850 0 - 1
Andrew Lewis 1903 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1749 = (17339 + 400 * (1 - 5)) / 9)

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