Event: Silver Rook

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Opponent	Rating	Result
Daniel Meredith	1650	0 - 1
Michael A Fox	1612	0 - 1
Paul G Day	1726	0 - 1

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

1263 = (4988 + 400 * (0 - 3)) / 3)