last in WWE. Only a week before WrestleMania, rumors surfaced that Lesnar too was leaving WWE to pursue a career in the National Football League (NFL). As a result, Lesnar's match with Goldberg became a fiasco as the fans at Madison Square Garden jeered and heckled both of them vociferously. Goldberg defeated Lesnar after a Jackhammer and both men subsequently received Stone Cold Stunners from Austin. After WrestleMania XX, Lesnar left WWE. Japanese promotions (2005–2007) On October 8, 2005, Lesnar won the IWGP Heavyweight Championship on his debut match in a three-way match with Kazuyuki Fujita and Masahiro Chono at a New Japan Pro-Wrestling (NJPW) show in the Tokyo Dome. Lesnar is one of the few American wrestlers to have held this title. He won the match by pinning Chono after an F-5, which he had renamed the Verdict since WWE owns the trademark on the F-5 name. After the match, Lesnar stated that this name was referring to his lawsuit against WWE, who filed a motion for a temporary restraining order to prevent Lesnar from continuing to work with NJPW on December 6, but the court did not grant it. Following that, he had two non-title victories against Manabu Nakanishi and Yuji Nagata. Lesnar successfully defended the championship on January 4, 2006, against former champion Shinsuke Nakamura. On January 13, WWE once again filed an injunction against Lesnar to stop him from defending the IWGP Heavyweight Championship, which was also not enforced as he went on to retain his championship against former Sumo Wrestling Grand Champion Akebono on March 19, at the Sumo Hall. Lesnar had another successful title defense against Giant Bernard on May 3. This was the first American vs. American title match in NJPW since Vader vs. Stan Hansen in 1990. On July 15, NJPW stripped Lesnar of the IWGP Heavyweight Championship as he did not return to defend it due to visa issues. A tournament was held on July 16 to determine the new champion, which was won by Hiroshi Tanahashi. Lesnar continued to possess the physical IWGP Heavyweight Championship belt until late June 2007. Approximately one year later on June 29, 2007, Lesnar defended his IWGP Heavyweight Championship against TNA World Heavyweight Champion Kurt Angle in a champion vs. champion match, at the debut event of the Inoki Genome Federation (IGF). IGF promoter Antonio Inoki had stated Lesnar was the "proper" IWGP Heavyweight Champion