Event: Richardson Cup

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Opponent Rating Result
John Baker 146 1 - 0
Peter Shaw 194 0 - 1
Samuel A Milson 199 ½ - ½
Phil Griffiths 166 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

176 = (705 + 400 * (1 - 1)) / 4)

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