Event: Derby & District Division 3

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Opponent	Rating	Result
Joe Willgoose	1457	0 - 1
Carl Weighill	1761	0 - 1
Malcolm Newsam	0	0 - 1

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

673 = (3218 + 400 * (0 - 3)) / 3)