Yellow Horn played major junior beginning in 2003–04 in the Western Hockey League with the Lethbridge Hurricanes and Tri-City Americans. In five seasons play in the league, he consistently scored beyond a point-per-game pace. In 2007–08, he tallied a league-leading 48 goals and a major junior career-high 97 points with the Americans and was named to the WHL West First All-Star Team. Despite Yellow Horn's offensive production as a junior, he went undrafted by an NHL team. In 2008–09, Yellow Horn turned pro, going overseas to Austria to play for EC Red Bull Salzburg of the Erste Bank Eishockey Liga. On January 28, 2009, however, he moved back to North America mid-season, signing with the Elmira Jackals of the minor leagueECHL. On October 28, 2009, Yellow Horn was traded to the Stockton Thunder. In the 2012–13 season, Yellow Horn was called up from the Ontario Reign of the ECHL to the Manchester Monarchs of the AHL on February 7, 2013. After making his long-awaited AHL debut, Yellow Horn proved his scoring prowess by contributing 18 points in just 28 games for Manchester to remain with the club for duration of the year. On June 27, 2013, Yellow Horn decided to return abroad to the familiar Austrian Hockey League, signing a one-year deal with Hungarian club, SAPA Fehérvár AV19. On September 3, 2014, Yellow Horn continued his journeyman career in agreeing to a one-year contract with Japanese club, Nippon Paper Cranes of the ALIH. On June 12, 2015, Yellow Horn signed a contract with the Czech team HC Orli Znojmo of the Austrian Hockey League. He made 53 appearances in the 2015-16 regular season, tallying 28 goals and 29 assists and also saw action in 18 playoff-contests with eight goals and 21 assists. Yellow Horn won the Ron Kennedy Trophy as the EBEL Most Valuable Player. In April 2016, he penned a deal with HC Plzeň of the Czech Extraliga. After just 11 games in the ELH, Yellow Horn returned to previous club, Orli Znojmo, of the EBEL. In April 2018, he signed an initial one-year deal with the Graz 99ers, his fourth club of the EBEL.
