Event: Division 1

Opponent Rating Result
Derek C Pugh 2073 0 - 1
Peter E Chaplin 2022 0 - 1
Justin Kleidermacher 2135 0 - 1
Nigel Pollett 1753 1 - 0
Nigel Pollett 1735 0 - 1
Peter E Chaplin 2021 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1690 = (11739 + 400 * (1 - 5)) / 6)

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