Event: D&DCL Div 1

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Opponent	Rating	Result
Esteve Mateu Guiu	195	½ - ½
Ray J Forey	169	½ - ½
David Williams	161	½ - ½
Andrew Robins	139	1 - 0
Andrew Stevens	0	0 - 1

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

133 = (664 + 400 * (1 - 1)) / 5)