[1] Upon his return to the United States, Cohn continued his training seven days a week under Soulman Alex G, eventually making his debut under the ring name Ryan Billington on June 18, 2005, facing Chasyn Rance at a Four Star Championship Wrestling event in Boca Raton, Florida.
[7] Meanwhile, he also continued his training under the likes of Antonio Banks, Big Tilly, Bruno Sassi, Masada, Norman Smiley, Pablo Marquez, Rusty Brooks and Ryan O'Reilly.
[25][26] On March 6, 2011, Classic made his debut for the Japanese Pro Wrestling Zero1 promotion, successfully defending the NWA World Junior Heavyweight Championship against Munenori Sawa at Tokyo's Ryōgoku Kokugikan.
[30][31] After a successful title defense against Takafumi Ito on November 6,[32] Classic lost the Zero1 version of the NWA World Junior Heavyweight Championship to Tsuyoshi Kikuchi on January 1, 2012.
[35] During the press conference announcing the signing, Zero1 president Shinjiro Otani compared Classic to his former in-ring opponents and top gaijin wrestlers Eddie Guerrero and Pegasus Kid.
[41] On October 16, Classic received another shot at the NWA International Lightweight Tag Team Championship with new partner Jason New, but the two were defeated in the title match by the defending champions, Frank David and Shawn Guinness.
[42] Classic ended his 2012 with a big six-man tag team Street Fight on December 15, where he, Atsushi Onita and Masato Tanaka defeated Akebono, Mineo Fujita and Rion Mizuki.
[43] On April 15, 2013, Classic came together with Jack Anthony, James Raideen, Jason New, Maybach β, Sebastian Concrete, Steven Walters and Tama Williams to form a gaijin stable named "New Age Wrestling Future" (NWF) under the guidance of Akebono.
[49] On December 2, 2014, Classic, Buki and Ryuichi Kawakami defeated Arashi, Nosawa Rongai and Ricky Fuji to win the vacant Tenryu Project 6-Man Tag Team Championship.