[2][3] Daniel Aloysius "Danny" Maher commenced his career at the age of 14, weighing 65 pounds.

The Hart–Agnew Law anti-gambling legislation forced Maher and numerous other jockeys and trainers to leave America for Europe where they quickly made a mark on European racing.

In 1903, Maher won two-thirds of England's Triple Crown with Rock Sand.

He also won The Derby three times (1903, 1905, 1906), five Eclipse Stakes (1902, 1904, 1906, 1909, 1910), and was a two-time winner of the Ascot Gold Cup (1906, 1909).

[citation needed] In 1955, Maher was one of the inaugural inductees in the United States' Racing Hall of Fame.