Event: B Division

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Opponent	Rating	Result
Mark Hesford	1800	0 - 1
Sajjad Dehghan-Afifi	1788	0 - 1
Francis E Moan	1694	0 - 1
Karl Moorcroft	1684	½ - ½
Alexander Burke	1603	0 - 1
Arpad Busznyak	1551	0 - 1
Tetsuaki Sanada	1350	0 - 1

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

1296 = (11470 + 400 * (0 - 6)) / 7)