In his first professional season in 2011–12, with the Florida Everblades, Nagle shared primary goaltending duties with John Muse, playing 39 games.

[4] After training camp with the Stars, Nagle did not make the club and was assigned to their ECHL affiliate, the Idaho Steelheads for the duration of the 2013-14 season, winning a career-high 23 of 43 games.

Nagle made his first start for the Griffins on January 23, in a game against the Utica Comets, earning his first career AHL win.

[10] Nagle played two further seasons with the Komets before signing a one-year AHL contract to return to the Grand Rapids Griffins on July 27, 2017.

[12] After three seasons in the Griffins organization, Nagle continued his career in the AHL as a free agent, agreeing to a one-year deal with the Lehigh Valley Phantoms, affiliate to the Philadelphia Flyers, on September 17, 2021.