Event: Graded Club Games

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Opponent Rating Result
Adrian Bond 84 1 - 0
David L Weston 120 1 - 0
Derek Rothwell 147 0 - 1
Roy A Ludlow 133 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

321 = (484 + 400 * (3 - 1)) / 4)

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