Event: Div 1 - Davy Trophy

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Opponent	Rating	Result
Paul Fletcher	2014	1 - 0
David Latham	2033	1 - 0
James RG Marley	1987	½ - ½
Samuel A Milson	2166	1 - 0
Jonathan P Nelson	2232	0 - 1
Oliver Graham	1848	1 - 0
Rob Woodford	2005	1 - 0

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

2269 = (14285 + 400 * (5 - 1)) / 7)