Event: Division Six

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Opponent Rating Result
Dennis M Horsley 100 ½ - ½
Paul L Hardstaff 118 0 - 1
Steve Phillips 138 ½ - ½
John Lunn 120 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-81 = (476 + 400 * (0 - 2)) / 4)

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