Event: Club Championship

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Opponent Rating Result
Roger Coleman 1236 0 - 1
Carl Thornhill 1000 0 - 1
J Graham Sands 0
Carl Thornhill 1000 0 - 1
Martin J Chadwick 1304 0 - 1
Martin J Chadwick 1304 0 - 1
Robert Perry 1174 0 - 1
Roger Coleman 1236 ½ - ½
J Graham Sands 0
Raymond F Rhodes 1241 0 - 1
Robert Perry 1174 0 - 1
Raymond F Rhodes 1241 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

911 = (11910 + 400 * (1 - 8)) / 10)

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