Event: 2nd Yorkshire Rapidplay Championships - Major

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Opponent	Rating	Result
Matthew R Wilson	1692	1 - 0
Angel Monterde	1729	1 - 0
Samir Cradock	1627	0 - 1
Nigel R Hepworth	1714	0 - 1
Jacob Smith	1669	1 - 0
Jack Booker	1484	1 - 0
Piotr Stachowiak	1604	1 - 0

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

1817 = (11519 + 400 * (5 - 2)) / 7)