[4] One day later Horwath made his official debut for New York starting in place of the injured Greg Sutton and Bouna Coundoul who was on international duty, helping his club to a 0–0 draw against Columbus Crew.

[7] On January 9, 2015, he signed for Norwegian side SK Brann, after spending some days there undergoing tests and trials.

[8] Horwath made his debut for SK Brann on April 6, 2015, against Fredrikstad FK, saving a 65th-minute penalty kick from Steffen Nystrøm in a match that ended 1–1.

He ended up starting four games during the season, including SK Brann's infamous loss to Førde IL in the first round of the 2016 Norwegian Cup.

[12] Horwath also played the second leg of SK Branns Europa League second round qualifier match against MFK Ružomberok.

Horwath returned to the United States in February 2018 when he signed with MLS club Real Salt Lake.