Event: Durham League Division A

Opponent Rating Result
Kevin J Wilson 1955 0 - 1
Robin J Nandi 1915 0 - 1
Douglas J Smith 1961 0 - 1
Jonathan Sams 1817 1 - 0
George Gazis 1932 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1676 = (9580 + 400 * (1 - 4)) / 5)

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