He later served as the coach of the Brown University baseball team in the 1920s and worked as a scout for the Detroit Tigers in the late 1920s and 1930.

[1] He attended Saint Michael's College in Vermont as a member of the high school class of 1906.

In his only loss in 1907, Dubuc threw a one-hitter and struck out 16 batters but Notre Dame lost to Minnesota, 2–1.

[3] On June 7, 1908, Dubuc and the Notre Dame catcher, Ray Scanlan, appeared in a semipro baseball game for the "White Rocks" at Gunther Park in Chicago.

[4][5] The Notre Dame athletic board of control charged Dubuc and Scanlan with professionalism, and they denied having played in the game and requested time to gather evidence in their defense.

[7] He returned to the mound as a relief pitcher two weeks later on July 12 and allowed only one hit in four innings.

[8] He also pitched a complete-game shutout over the 1908 World Series champion Chicago Cubs team on September 7, 1908.

[1] He also traveled with the Reds to Cuba after the 1908 season and won three of four exhibitions games he started on that trip.

[1] In 1912, Dubuc appeared in 37 games, 26 as a starter, and compiled a 17–10 record with a 2.77 ERA and a .269 batting average.

He ranked among the American League leaders with a .630 winning percentage (eighth), and 23 complete games (ninth).

He also led the league for the second consecutive year in wild pitches with 13 and ranked fourth with 91 bases on balls.

[1] On January 16, 1917, the Tigers released Dubuc to the Salt Lake City Bees of the Pacific Coast League.

[19] He appeared in 36 games, 33 as a relief pitcher, for the 1919 Giants and compiled a 6–4 record with a career low 2.66 ERA.

[28][29][30][31] In December 1926, Dubuc signed a three-year contract to coach the Brown University baseball team.

[38][39] He also served as the manager of the New Bedford Whalers baseball team of the New England League during the 1936 season.