Event: 5th Simon Bartlett Memorial Open

Opponent Rating Result
Stephen P Dilleigh 2020 0 - 1
Martin Goldschmidt 1978 0 - 1
Alexander Ellis 1674 1 - 0
Alan K Punnett 2133 1 - 0
David L Roberts 1978 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1877 = (9783 + 400 * (2 - 3)) / 5)

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