Event: Div 1 - Davy Trophy

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Opponent	Rating	Result
Chris CW Shephard	2098	0 - 1
John S Neely	0	1 - 0
Ayodeji Jeje	2067	½ - ½
Robert Porter	1604	1 - 0
Miles T Hemingway	1780	½ - ½
Shamil Khadaev	1661	½ - ½
Brendan Ashmore	1677	1 - 0

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

1670 = (10887 + 400 * (3 - 1)) / 7)