Event: Division 2

Opponent Rating Result
Ian P Morgan 1801 1 - 0
Lyn Stiffell 1567 0 - 1
Stuart Nelson 1804 1 - 0
Barrie Quin 1563 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1884 = (6735 + 400 * (3 - 1)) / 4)

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