Yo Tambien (1889–1896) was an American Thoroughbred racing filly bred in California by Theodore Winters, a breeder and major landholder from the Washoe Valley in Nevada who was sometimes called "Black T" due to his huge, black, T-shaped moustache.
Besides owning a huge spread near the present town of Winters in Yolo County, California, called Rancho del Arroyo, he owned another California farm on the banks of the Sacramento River near Sacramento called Rancho del Rio.
Meanwhile, in the 1870s, the founder of California's first sporting paper, the "Breeder and Sportsman" Joseph Cairn Simpson, had also come west, bringing a few horses.
When Norfolk grew too old, Winters put Marian to a California-bred horse he owned called Joe Hooker, also a tail-line descendant of Lexington.
Winters began racing Yo Tambien at the San Francisco Bay District Course as a two-year-old.
Before her second season, "Black T" Winters decided to withdraw from the actual racing of his horses and to concentrate on breeding them.
To this end, he shipped his juveniles, including Yo Tambien, to the Crescent City Jockey Club in Chicago to sell.
She made the greatest impact in the Garfield Park Derby, in which she carried 127 pounds and was the sole filly against the best colts in the west.
In the Great Western Handicap, carrying much more weight than rivals, Yo Tambien clocked the mile and a half race at 2 minutes 33 and ¾ seconds.
She was successfully bred to the great Hanover (enjoying one of his best years at stud), but one day, pregnant and in turn-out in her paddock, she became so seriously impaled on a loose board she had to be destroyed.