Event: D&DCL Div 1

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Opponent	Rating	Result
Martin Pettinger	126	1 - 0
Andrew Townsend	139	½ - ½
David Smith	153	1 - 0
Benjamin I Nevett-Farman	144	0 - 1
Shane Bhayat	162	½ - ½
Derek A Jarvis	173	½ - ½
Martin Cobham	142	1 - 0
David Smith	153	½ - ½

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

249 = (1192 + 400 * (3 - 1)) / 8)