Event: Division 2

Opponent Rating Result
Nick J London 1754 ½ - ½
Stuart Humphreys 1936 0 - 1
D Philip Morgan 1733 ½ - ½
Daniel Hardman 1681 1 - 0
Graham Neil 1615 1 - 0
Alexandra Arlachova 1539 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1710 = (10258 + 400 * (2 - 2)) / 6)

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