Event: Viking Bay Rapid

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Opponent	Rating	Result
Robert Cronin	1376	1 - 0
Mike Jenkinson	1341	0 - 1
Fredy Reber	1161	0 - 1

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

1159 = (3878 + 400 * (1 - 2)) / 3)