Event: Mini League

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Opponent Rating Result
Keith J Riach 127 1 - 0
Andy Ross 138 1 - 0
Paul Howden 140 1 - 0
Darren McCarthy 132 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

434 = (537 + 400 * (3 - 0)) / 4)

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