Event: Roger Goldsmith Div 1

Opponent Rating Result
Steve Lovell 1813 1 - 0
Alan PH Norman 1746 ½ - ½
James Pack 1846 0 - 1
Stephen C Pride 1644 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1862 = (7049 + 400 * (2 - 1)) / 4)

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