Event: Club Championship

Opponent Rating Result
Roger Coleman 1236 0 - 1
J Graham Sands 0
Robert Perry 1174 0 - 1
Carl Thornhill 1000 1 - 0
Martin J Chadwick 1304 0 - 1
Roger Coleman 1236 1 - 0
Gwyn Price 1100 1 - 0
Carl Thornhill 1000 1 - 0
J Graham Sands 0
Martin J Chadwick 1304 0 - 1
Gwyn Price 1100 0 - 1
Robert Perry 1174 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1163 = (11628 + 400 * (5 - 5)) / 10)

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