Event: Summer League Division 1

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Opponent Rating Result
Marek Gajdosz 185 1 - 0
Peter Ackley 192 ½ - ½
Steve J Gibbs 142 1 - 0
Peter Shaw 193 ½ - ½
Andrew Butterworth 146 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

252 = (858 + 400 * (2 - 1)) / 5)

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