Event: Division 2

Opponent Rating Result
Simon C Moth 1788 0 - 1
Nicholas J Pelling 1743 1 - 0
Robert JV Davies 1713 1 - 0
Tom A Barton 1908 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1788 = (7152 + 400 * (2 - 2)) / 4)

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