Event: Open Championship

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Opponent Rating Result
Steve K Dean 155 1 - 0
Jonathan WR Underwood 183 0 - 1
Steve K Dean 155 ½ - ½
Jonathan WR Underwood 183 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

169 = (676 + 400 * (1 - 1)) / 4)

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