Event: Division 1

Opponent Rating Result
Simon C Moth 1792 ½ - ½
Peter Biggs 1686 1 - 0
Robert JV Davies 1738 ½ - ½
John C Moore 1970 0 - 1
Ashley Freeman 2000 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1837 = (9186 + 400 * (1 - 1)) / 5)

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