Lesnar successfully defended his newly won title against the debuting Paul London on the October 9 episode of "SmackDown!". He returned to feud with The Undertaker, as Lesnar had previously cost Undertaker the title in a match against then-champion Kurt Angle on the September 4 episode of "SmackDown!", which granted him a shot at Lesnar's title. At No Mercy on October 19, Lesnar defeated Undertaker in a Biker Chain match after interference from The Full Blooded Italians and Vince McMahon. After Paul Heyman returned to WWE as SmackDown! General Manager, Lesnar aligned himself with Heyman. With Survivor Series coming up, Lesnar decided to challenge Angle to a traditional Survivor Series elimination tag team match. Lesnar chose Big Show as his first teammate, with Heyman adding a returning Nathan Jones and a debuting Matt Morgan to bring the team number to four. Angle chose Chris Benoit and The APA (Bradshaw and Faarooq) to join his team. However, Faarooq was injured during a match with Lesnar and Angle's team was forced to find a replacement for him. Lesnar's team picked A-Train to fill the fifth and final spot for them after he attacked John Cena, who refused to accept an invitation to join Lesnar's team. Cena instead joined Angle's team and Angle added Hardcore Holly as the fifth member (Lesnar had legitimately injured Holly the year before and he had not wrestled since). On November 16 at Survivor Series, Lesnar was eliminated after Benoit forced him to tap out to the "Crippler Crossface"; Lesnar's team would go on to lose the match. On the December 4 episode of "SmackDown!", Lesnar successfully defended the WWE Championship against Benoit after Benoit passed out to Lesnar's debuting submission hold, the "Brock Lock".