Event: Division Three

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Opponent Rating Result
James Lyons 140 ½ - ½
Mark Davey 188 0 - 1
Colum Jezierski 179 ½ - ½
Simon Liebesny 122 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

157 = (629 + 400 * (1 - 1)) / 4)

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