Event: Richard Furness(500) League

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Opponent	Rating	Result
Nick Cooke	1458	1 - 0
Michael Tebelev	1960	1 - 0
Tom Vout	1878	1 - 0

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

2165 = (5296 + 400 * (3 - 0)) / 3)