Event: Bob Burns 2019

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Opponent Rating Result
Karl Rayner 0 1 - 0
Peter D Rooney 194 0 - 1
Ian Jewsbury 124 ½ - ½
Bill Tait 133 1 - 0
M Younis Quereshi 162 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

123 = (613 + 400 * (2 - 2)) / 5)

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