Event: Division 1

Opponent Rating Result
Adrian P Somerfield 2013 0 - 1
Leslie J Crane 1861 ½ - ½
Robert T Killeen 1894 ½ - ½
Colin L Ellis 1473 0(def) - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1789 = (5768 + 400 * (0 - 1)) / 3)

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