Event: Division Five

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Opponent Rating Result
David I Buckley 80 ½ - ½
Sam Duffield 66 0 - 1
John Gammon 23 1 - 0
Ben Bradley 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

142 = (169 + 400 * (2 - 1)) / 4)

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