[2] In 1911, Drohan joined the Central Association's Kewanee Boilermakers and was the team's top pitcher, with a record of 19–10.

[2] He won 17 of 19 games at one point and was pitching so well that Kewanee received a number of offers from other clubs to buy him.

[5] The following year, Sporting Life wrote that he was a "natural pitcher" and "considered an unusually good prospect.

[2] Overall, Drohan pitched in 220 minor league baseball games and had a career win-loss record of 101–76.

[2] He died in Kewanee, Illinois – the site of his former glory – in 1926 and was buried in Pleasant View Cemetery.