Event: D&DCL Div 2

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Opponent	Rating	Result
Ralph MA Allen	145	½ - ½
Edward T Bromilow	160	0 - 1
James R Shore	140	½ - ½
Anthony L Natt	161	½ - ½
Alex Webster	163	0 - 1
David Williams	161	0 - 1
Shane Bhayat	162	0 - 1
Martin Cobham	142	½ - ½
D Philip Morgan	145	½ - ½

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

-25 = (1379 + 400 * (0 - 4)) / 9)