WrestleMania 21
The other Interpromotional match on the card was between Randy Orton and The Undertaker, with Orton representing Raw and Undertaker representing SmackDown!. The feud first started on the March 7 edition of Raw when Orton challenged The Undertaker to a match at WrestleMania billed as "Legend vs. Legend Killer". Three days later on SmackDown!, Undertaker accepted Orton's challenge. On the March 14 edition of Raw, Jake "The Snake" Roberts, attempted to give Orton advice about his match with Undertaker at WrestleMania, but was RKOed when Orton was not cooperating. Later that week on SmackDown!, Orton and Undertaker had a contract signing for their match at WrestleMania. After both men signed, Orton told Undertaker that he has nothing but respect for him. Shortly afterwards, Orton slapped him and claimed that his 12-0 undefeated streak at WrestleMania, would soon be 12-1. The next week on Raw, Orton claimed that his confidence was at an all-time high, despite what happened on SmackDown! the week before. Afterwards, Orton turned heel and furthered his Legend killer gimmick by RKOing his then-girlfriend Stacy Keibler.