Event: HDCA Summer League Section 2

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Opponent	Rating	Result
Ian Scott	109	1 - 0
J Gerry Johnstone	128	0 - 1
Chris J Matthews	144	0 - 1

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

-6 = (381 + 400 * (1 - 2)) / 3)