Event: Rapidplay League

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Opponent Rating Result
Peter F Mason 138 ½ - ½
Peter F Mason 138 ½ - ½
Hugh Cornish 84 1 - 0
Hugh Cornish 84 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

211 = (444 + 400 * (1 - 0)) / 4)

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