Event: Rapid Play League

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Opponent Rating Result
Warren B Dennison 2012 1 - 0
Warren B Dennison 2012 ½ - ½
Peter D Rooney 2088 0 - 1
Peter D Rooney 2088 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2150 = (8200 + 400 * (2 - 1)) / 4)

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