Haas debuted on WWE's main roster on the December 26, 2002 episode of "SmackDown!" as a heel (villainous character) along with Shelton Benjamin as Team Angle. The tag team was the "contingency plan" of Paul Heyman, and were intended to help WWE Champion Kurt Angle retain his title, attacking Chris Benoit and Brock Lesnar in an attempt to soften them up. They quickly won the WWE Tag Team Championship on February 6, 2003, by defeating Los Guerreros (Eddie and Chavo Guerrero). They held the championship for three months, including a successful title defense at WrestleMania XIX against Los Guerreros and the team of Chris Benoit and Rhyno, before losing the championship to Eddie Guerrero and his new partner Tajiri in a ladder match on May 18 at Judgment Day. On the June 12 episode of "SmackDown!", Angle fired Haas and Benjamin after they blamed him for losing the Tag Team Championship and began to question his leadership. The duo then dubbed themselves The World's Greatest Tag Team, although announcers made sure to add "Self Proclaimed" to the name. Haas and Benjamin regained the championship from Guerrero and Tajiri on the July 3 episode of "SmackDown!", but lost it to the reformed Los Guerreros on September 18. The team was separated when Benjamin was moved to the Raw brand as part of the 2004 Draft Lottery.