He helped lead the team to the 2004 Southeastern Conference baseball tournament finals, though the club was beaten by South Carolina.

He helped lead Vanderbilt to the 2006 Southeastern Conference baseball tournament, with the team losing to Ole Miss in the finals.

Buschmann split the summer between the Low–A Eugene Emeralds and High–A Lake Elsinore Storm, going a combined 4–4 with a 3.19 ERA in 17 games (12 starts).

In 2008, he was 10–6 with a 2.98 ERA in 27 starts for the Double–A San Antonio Missions and earned a spot on the Texas League's Mid- and Post-Season All-Star squads.

On December 8, 2011, the Washington Nationals selected Buschmann in the minor league phase of the Rule 5 Draft, though the team traded him to the Tampa Bay Rays in exchange for cash considerations on April 16, 2012.

On August 11, 2015, Buschmann was traded to the Baltimore Orioles in exchange for cash considerations, and made one start for the Triple–A Norfolk Tides.

"[13] Adam Sobsey of Grantland.com wrote a feature piece on Buschmann in August, as well, asking "will the minor league strikeout king ever reach the majors?

On April 7, 2016, Buschmann was promoted to the major leagues for the first time after pitcher Kyle Drabek was designated for assignment.

Buschmann pitched a scoreless top of the ninth inning, allowing only a base hit to Munenori Kawasaki.

[19] On February 28, 2017, Buschmann signed a minor league contract with the Toronto Blue Jays, and was assigned to the Triple-A Buffalo Bisons.

On December 17, 2017, Buschmann was hired by the San Francisco Giants organization as an assistant director of player development.

[22] Buschmann caught Aaron Judge's AL record-tying 61st home run while working the bullpen for the Toronto Blue Jays.