Event: Div 1 - Davy Trophy

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Opponent	Rating	Result
Aram Ter-Gevorkian	2020	½ - ½
Peter W Hempson	1923	½ - ½
Oliver Graham	1937	½ - ½
Thomas Wills	2000	½ - ½
Daniel J Clayton	1718	½ - ½
Michael R Handley	2030	½ - ½
Jonathan W Arnott	2201	0 - 1
W (Bill) Ward	1701	1 - 0
Nigel Baxendale	1591	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1902 = (17121 + 400 * (1 - 1)) / 9)