The other main feud on the card was between three tag teams, Kurt Angle and Chris Benoit, Edge and Rey Mysterio, and Los Guerreros (Eddie and Chavo Guerrero), over the WWE Tag Team Championship. On the October 3 episode of "SmackDown!", General Manager, Stephanie McMahon announced an eight team tournament to determine the inaugural WWE Tag Team Champions that would conclude at No Mercy. Los Guerreros defeated Rikishi and Mark Henry in the first quarterfinal round. On the October 10 episode of "SmackDown!", in the second quarterfinal round, Kurt Angle and Chris Benoit defeated John Cena and Billy Kidman while Edge and Rey Mysterio defeated Brock Lesnar and Tajiri to advance to the semifinals. On the October 17 episode of "SmackDown!", Edge and Mysterio defeated Reverend D-Von and Ron Simmons to advance to the finals. Later, Angle and Benoit advanced to the finals by defeating Los Guerreros. At No Mercy, Angle and Benoit defeated Edge and Mysterio in the finals to become the first WWE Tag Team Champions. On the October 24 episode of "SmackDown!", Edge and Rey Mysterio defeated Los Guerreros in a number one contenders tag match to earn a shot at the tag titles. Later that night, the WWE Tag Team Champions, Kurt Angle and Chris Benoit fought each other in an Unforgiven rematch, which Benoit won after interference from Los Guerreros. On the October 31 episode of "SmackDown!", both Benoit and Angle cost one another their matches. Angle helped Edge defeat Benoit then later that night, Benoit returned the favor by helping Eddie Guerrero defeat Angle. Afterwards, Angle and Benoit brawled at the Halloween party, ending with Angle delivering an Angle slam and Benoit bashing the bottle into Angle's head at the same time, knocking each other down. On the November 7 episode of "SmackDown!", Angle and Benoit lost the WWE Tag Team Championship to Edge and Mysterio in a 2 out of 3 falls match after Edge pinned Angle in the third and final fall.