He played in Major League Baseball (MLB) for the Los Angeles Dodgers, Cincinnati Reds, Minnesota Twins, and Seattle Mariners.

He played with the Gulf Coast Dodgers in 2008, Ogden Raptors in 2009, Great Lakes Loons in 2010 and Rancho Cucamonga Quakes in 2011.

[4] Magill began the 2016 campaign in the minor leagues, rehabbing his injury with Louisville and the Double–A Pensacola Blue Wahoos.

[6] On January 30, 2017, Magill signed a minor league contract with the San Diego Padres organization.

[7] He spent the season with the Triple–A El Paso Chihuahuas, also making one appearance for the rookie–level Arizona League Padres.

Magill began the 2020 season with a 6.10 ERA with 11 strikeouts in 10+1⁄3 innings pitched across 11 appearances before being placed on the 10-day injured list with a right shoulder strain on August 28.

[13] On October 22, Magill was activated from the 60-day injured list, but was outrighted off of the 40-man roster and elected free agency.

[17] Magill later stated on Twitter that his reason for retirement was due to lingering shoulder injuries and that he "couldn't throw without discomfort and pain.