Event: Division One

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Opponent Rating Result
Thomas B Bonn 201 1 - 0
Ravi Haria 247 0 - 1
Alan H Perkins 188 ½ - ½
Richard Britton 204 1 - 0
Federico Rocco 214 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

211 = (1054 + 400 * (2 - 2)) / 5)

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