Event: Woodhouse Cup

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Opponent	Rating	Result
David Shapland	2015	0 - 1
A Jon Griffith	1786	1 - 0
Richard Wilson	1609	1 - 0
Stylianos Oikonomou	1964	0 - 1
Daniel JS Sullivan	2019	0 - 1
Steve R Hodge	2024	0 - 1
Andy J Bagley	1876	1 - 0
Ihor Lewyk	2042	0 - 1

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

1817 = (15335 + 400 * (3 - 5)) / 8)