Event: Division One

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Opponent Rating Result
Robert Glass 1855 ½ - ½
Okwose Marc Obi 1890 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1673 = (3745 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
David Smith 1864 1 - 0
Edward Ng 1881 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1873 = (3745 + 400 * (1 - 1)) / 2)