Event: Div 1 - Davy Trophy

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Opponent Rating Result
Chris N Ross 2224 0 - 1
Jonathan A Tait 2155 0 - 1
Geoffrey D Brown 1786 1 - 0
Peter M Gayson 2158 0 - 1
Paul Fletcher 2014 ½ - ½
Jim Davis 1922 ½ - ½
James RG Marley 1987 0 - 1
James RG Marley 1987 ½ - ½
D Martin Howard 1984 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1891 = (18217 + 400 * (1 - 4)) / 9)

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