Event: Doncaster Bell Trophy

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Opponent Rating Result
Peter Catt 141 ½ - ½
Phillip J Battye 131 0 - 1
Phillip J Battye 131 0 - 1
Peter Catt 141 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-64 = (544 + 400 * (0 - 2)) / 4)

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