Event: A Division

Opponent Rating Result
Francis Batchelor 177 0 - 1
Stephen W Dauber 178 0 - 1
Sean Marsh 207 0 - 1
Bernard Price 153 1 - 0
Andrew M Smith 165 ½ - ½
Klauss Mosnegutu 192 0 - 1
Francis Batchelor 177 ½ - ½
Peter Harker 140 ½ - ½
Andrew M Smith 165 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-5 = (1554 + 400 * (1 - 5)) / 9)

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