Event: Silver Rook

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Opponent	Rating	Result
Ellis Howard	1632	½ - ½
Robert Oldfield	1568	0 - 1
Gary Corcoran	1687	0 - 1

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

1362 = (4887 + 400 * (0 - 2)) / 3)