Event: Division 1

Opponent Rating Result
Ian Paul Stephens 1768 ½ - ½
James P Rothwell 1914 0 - 1
Mike J Coffey 1864 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1849 = (5546 + 400 * (1 - 1)) / 3)

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