Event: Division 2

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Opponent Rating Result
Geoff Laurence 162 1 - 0
Malcolm A Roberts 136 1 - 0
Carl Gartside 155 0 - 1
Olawale Titiloye 158 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

253 = (611 + 400 * (2 - 1)) / 4)

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