For a time he rode both on the flat and over jumps , before specialising in the former discipline .
Semblat became an apprentice jockey at a young age and rode his first winner at the age of 13 in 1910 .
For a time Semblat rode both on the flat and over jumps , before specialising in the former discipline .
Semblat became an apprentice jockey at a young age and rode his first winner at the age of 13 in 1910 .