Event: Division Six

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Opponent Rating Result
Martin J Draper 100 ½ - ½
R (Bob) Hillman 72 1 - 0
Ian Baulch-Jones 0 1 - 0
Ashley Smith 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

143 = (172 + 400 * (2 - 1)) / 4)

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