Event: 5th Somerset New Year Major

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Opponent	Rating	Result
Daniel Shek	1951	0 - 1
George Lekoudis	0	½ - ½
Dave J Williams	0	½ - ½
Chris Carpenter	0	½ - ½
Edward P Small	0	½ - ½

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

310 = (1951 + 400 * (0 - 1)) / 5)