Event: Division 2

Opponent Rating Result
Rod B Newbery 1773 ½ - ½
Benjamin U Phillips 1930 1 - 0
Oded Pilowsky Bankirer 1854 0 - 1
Martyn Goodger 2119 0 - 1
Paul R Kemp 2015 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1858 = (9691 + 400 * (1 - 2)) / 5)

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