Ruthless (1864–1876) was an American Thoroughbred filly and a National Museum of Racing and Hall of Fame-inducted racehorse.
[7] She won by six lengths, and the correspondent for The New York Times commented that she finished the race "galloping along as if she was at exercise".
This was a 1+1⁄2 miles (2,400 m) race for three-year-olds, and Ruthless placed second to her stablemate Monday, who won by two lengths.
[9] On June 19, 1867, Ruthless beat out De Courcey by a head at Jerome Park Racetrack to win the inaugural running of the Belmont Stakes.
[10][11] Her jockey was Gilbert Patrick, later inducted into the Hall of Fame, whose name was often abbreviated to "Gilpatrick" in the race results.
The correspondent for The New York Times called it a "splendid race home" and "a most exciting finish", as Ruthless won by "a short neck".
This was a 2+1⁄4 miles (3,600 m) race, and she came in second to De Courcey, but managed to beat Number Three (owned also by Morris), Jubal and Clement.
[17] Ruthless ended her racing career with a record of 11 starts, placing first 7 times and 4 second-place finishes.