Event: Division One

Opponent Rating Result
Ian Duvall 2051 0 - 1
John D Wager 2057 0 - 1
Richard M Webb 2257 0 - 1
Stephen B James 2027 1 - 0
Peter Hasson 2067 0 - 1
Soham Kumar 2091 0 - 1
Harvey L Duckers 2045 0 - 1
James N Stayt 1891 ½ - ½
Maurice E Lawson 2028 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1790 = (18514 + 400 * (1 - 7)) / 9)

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