On March 22, 2011, the
Tampa Bay Lightning signed the undrafted free agent to a two-year entry-level contract. He played NCAA hockey at
Ferris State University prior to turning professional. In his first professional season in
2011–12, with the Florida Everblades, Nagle shared primary goaltending duties with
John Muse, playing 39 games. During the
playoffs, Nagle recorded the best
goals against average and tied for first in
save percentage, at 1.42 and .941, respectively. After winning the
Kelly Cup, Nagle was called up to the AHL for the Lightning organization's affiliate, the Norfolk Admirals, during their
Calder Cup championship series against the
Toronto Marlies. On August 27, 2013, Nagle agreed as a free agent to a one-year AHL contract with the Texas Stars, the affiliate of the
Dallas Stars. 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. On July 21, 2014, Nagle opted to remain in the ECHL, signing a one-year deal with the
Fort Wayne Komets. On January 12, 2015, the
Grand Rapids Griffins signed Nagle to a
professional try out. Before signing a professional tryout with the Griffins, he recorded a 17–4–1 record, a 2.42 GGA, and a .910 save percentage in 22 games with the Fort Wayne Komets this season. On February 5, 2015, Nagle was released from his professional tryout, and returned to the Fort Wayne Komets. Nagle made his first start for the Griffins on January 23, in a game against the
Utica Comets, earning his first career AHL win. In three AHL games this season, Nagle recorded a 1–1–0 record, 1.76 goals against average, and a 0.948 save percentage. During the
2014–15 season, Nagle posted a 23–7–2 record, 2.48 GAA and a .907 save percentage with the Fort Wayne Komets. He also made two appearances with the Rochester Americans and one with the Utica Comets. On July 22, 2015, the Fort Wayne Komets re-signed Nagle. On December 9, 2015; the Grand Rapids Griffins signed Nagle to a professional try out. Before signing a professional tryout with the Griffins, he recorded a 5–4–0 record, with a 2.51 GAA and a .910 save percentage in 10 games with the Fort Wayne Komets this season. 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. Nagle was named the Warrior Hockey/ECHL Goaltender of the Month for November 2017. He recorded a 7–1–1 record, with a 2.66 GAA and a .907 save percentage in nine games during the month. He was also named ECHL Goaltender of the Week for the week ending November 6 after going 3–0–0 with a 2.03 GAA and a .933 save percentage in three appearances. 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. ==International play==