Event: MET Stevenson Cup

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Opponent	Rating	Result
Peter L Childs	150	½ - ½
David E Brown	149	½ - ½
Pascal Jasserand	138	1 - 0
Orla Dorman	122	0 - 1
James R Jackson	120	½ - ½
Martin Zissell	109	1 - 0
Andrew D Craig	142	1 - 0

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

247 = (930 + 400 * (3 - 1)) / 7)