Event: Gordon Nobbs League

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Opponent	Rating	Result
Anthony Tatam	94	0 - 1
Anthony Tatam	94	0 - 1
Graham A Mill-Wilson	105	1 - 0
Graham A Mill-Wilson	105	1 - 0
Benjamin Saberi	0	1 - 0
Adam Hart-Davis	129	½ - ½
Adam Hart-Davis	129	0 - 1

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

94 = (656 + 400 * (3 - 3)) / 7)