After his playing days , he worked as a scout , and became the first African American Coach in Major League Baseball .
Grave buck O'Neil - first baseman and manager in the Negro American League , mostly with the Kansas City Monarchs .
After baseman 's playing days , baseman worked as a scout , and became the first African American Coach in Major League Baseball .
Grave buck O'Neil - first baseman and manager in the Negro American League , mostly with the Kansas City Monarchs .