Event: Larry Guard League

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Opponent	Rating	Result
T Klaus Tekniepe	73	1 - 0
James H Parsons	67	1 - 0
T Klaus Tekniepe	73	0 - 1

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

204 = (213 + 400 * (2 - 1)) / 3)