Event: 2nd Yorkshire Rapidplay Championships - Minor

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Opponent	Rating	Result
Anant Handa	1237	1 - 0
Rishav Banerjee	1268	1 - 0
Mikhail Kupriyanov	1559	0 - 1
Piotr Kaszynski	1265	0 - 1
Peter Galloway	1354	0 - 1
Garry Kitchin	1314	1 - 0
Carlo Cavaliere	1560	0 - 1

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

1308 = (9557 + 400 * (3 - 4)) / 7)