Event: Durham League Division B

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Opponent Rating Result
Theo Jenkins 1810 1 - 0
Bill Wilson 1855 0 - 1
Steve H Jefferies 1595 1 - 0
Kevin J Wilson 1944 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1901 = (7204 + 400 * (2 - 1)) / 4)

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