Event: Woodhouse Cup

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Opponent Rating Result
Eric D Gardiner 180 1 - 0
Mark W Rogerson 174 ½ - ½
Paul A Johnson 162 1 - 0
D Martin Howard 175 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

373 = (691 + 400 * (2 - 0)) / 4)

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