While playing college baseball, he also played semi-professional baseball for multiple teams.
At home, Ambler worked as a truck driver and played semi-professional baseball.
Williams also played semi-professional baseball after leaving the professional circuit.
He played semi-professional baseball while in high school, then ran away from home in 1902, at 17.
His father was a factory worker who had played semi-professional baseball.
He played semi-professional baseball in the summer of 1945 while awaiting his discharge.
He even played semi-professional baseball in Omaha to earn extra money.
Through the years semi-professional baseball was sponsored by the "Y".
He played semi-professional baseball as a young man, playing shortstop.
His first experience of semi-professional baseball came in 1895, when he was just 14 years old.