Event: Summer League Division 2

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Opponent	Rating	Result
Steve Withington	1719	0 - 1
Phil Griffiths	1980	1 - 0
Paul Fletcher	1946	½ - ½
Kyle Reed	1958	1 - 0
Richard J Webster	173	0 - 1
Alejandro Lopez-Martinez	1681	0 - 1
Shane M C Williams	1460	1 - 0
Geoff Frost	1863	1 - 0

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

1648 = (12780 + 400 * (4 - 3)) / 8)