Event: Doncaster League

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Opponent Rating Result
Peter Catt 1771 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1371 = (1771 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Martin J Sheard 1887 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1487 = (1887 + 400 * (0 - 1)) / 1)