Event: Division 4

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Opponent Rating Result
Nikos Margaritis 100 1 - 0
Derek A Padvis 120 ½ - ½
Aidan Elston 69 1 - 0
Graham J Gibson 111 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

300 = (400 + 400 * (2 - 0)) / 4)

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