Event: Worcestershire Championship League

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Opponent	Rating	Result
Daniel M Lambourne	2038	½ - ½
Phil Maddocks	1734	1 - 0
David Spowart	1789	½ - ½
Nigel Hosken	2067	½ - ½
Phil Maddocks	1734	1 - 0
Lee Davis	2086	½ - ½
Brian Turner	1970	½ - ½
Peter R Kitson	2039	½ - ½
Ray A Collett	1877	½ - ½
David Spowart	1789	½ - ½

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

1992 = (19123 + 400 * (2 - 0)) / 10)