William Daley (June 27, 1868 - May 4, 1922) was a Major League Baseball pitcher from 1889 to 1891. He played for the Boston Reds and Boston Beaneaters.

Daley started his professional baseball career with the Jersey City Skeeters in 1887. In 1890 - his only full season in the majors - he led the Players' League in winning percentage with a record of 18-7.

[ Source: Wikipedia ]