Event: Mini League

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Opponent Rating Result
Stephen Forbes 118 1 - 0
Keith J Riach 127 1 - 0
Pete Farrell 115 ½ - ½
Pete Brennan 121 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

420 = (481 + 400 * (3 - 0)) / 4)

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