Event: Three East

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Opponent	Rating	Result
Rafe Martyn	2398	0 - 1
Tom A Barton	1908	0 - 1
Greg Edwards	1870	1 - 0
Kevin P Lenaghan	1878	½ - ½
Paul Chantrell	1767	½ - ½
Matteo B Bezzini	1818	0 - 1
Tom A Barton	1908	0 - 1

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

1764 = (13547 + 400 * (1 - 4)) / 7)