Event: Div 5 - P H Charles Trophy

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Opponent Rating Result
Andrew Shaw 0 ½ - ½
Matthew Nunns 1285 ½ - ½
Lachlan Watson 1475 0 - 1
Michael W Simmons 1173 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

783 = (3933 + 400 * (0 - 2)) / 4)

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