No Mercy 2003 No Mercy 2003 was a professional wrestling pay - per - view ( PPV ) event produced by World Wrestling Entertainment ( WWE ) , which took place on October 19 , 2003 at the 1st Mariner Arena in Baltimore , Maryland . It was the sixth event under the No Mercy chronology and starred wrestlers from the SmackDown ! brand . Nine professional wrestling matches were scheduled on the event ' s card . The main event saw WWE Champion Brock Lesnar defeat The Undertaker to retain his championship in a match where a chain was hung from a pole and the first man to reach it could use it as a legal weapon in what was called a Biker Chain match . Two featured bouts were scheduled on the undercard . In a standard match for the WWE United States Championship , the Big Show defeated Eddie Guerrero to win the title . The other was also a standard match , in which Kurt Angle defeated John Cena . No Mercy had an attendance of approximately 8 , 500 and received about 254 , 000 PPV buys , more than the following year ' s event . This event helped WWE increase its PPV revenue by $ 6 . 2 million from the previous year . When the event was released on DVD , it reached a peak position of seventh on " Billboard ' s " DVD Sales Chart . Background . The event featured nine professional wrestling matches with outcomes predetermined by WWE script writers . The matches featured wrestlers portraying their characters in planned storylines that took place before , during and after the event . All wrestlers were from the SmackDown brand , a storyline division in which WWE assigned its employees . The main event at No Mercy was a Biker Chain match for the WWE Championship . In this match , a chain was hung on a pole above the ring , and when it was retrieved it could be used as a legal weapon . The match was between WWE Champion Brock Lesnar , who defended against The Undertaker . The buildup to the match began on the August 28 episode of " SmackDown " , when the Undertaker defeated Lesnar and The Big Show in a Triple Threat match , earning a title shot against then WWE Champion Kurt Angle . The following week on the September 4 episode of " SmackDown " , Angle defended the championship against the Undertaker , however , the match ended in a no contest after Lesnar interfered and attacked them both with a steel folding chair ; Angle retained the championship as a result of Lesnar ' s interference . Two weeks later on " SmackDown " , Angle defended the title against Lesnar in a match in which the wrestler with the most scoring conditions by a set period of time would win the title in what is called an Iron Man match . Lesnar scored five falls , while Angle scored four in the encounter , thus , Lesnar won the match and became the new WWE Champion . The following week on " SmackDown " , legitimate WWE Chairman Vince McMahon held a ceremony to introduce the new WWE Champion Lesnar , but was interrupted by the Undertaker and SmackDown General Manager Stephanie McMahon , who announced that Lesnar would face the Undertaker at No Mercy for the WWE Championship . On the October 9 episode of " SmackDown " , Lesnar defended the title against Paul London . The match was interrupted by the Undertaker , who had a meeting with Stephanie earlier that night . He announced that his match with Lesnar at No Mercy would be a Biker Chain Match rather than a standard match . One of the featured bouts on the undercard saw the WWE United States Champion Eddie Guerrero defending the championship against the Big Show . The events leading up to this match began on the October 9 episode of " SmackDown " , when it was announced that Guerrero would face the Big Show at No Mercy for the title . Later in the night , Chavo Guerrero ( Salvador Guerrero IV ) brought the Big Show out to the ring , followed by Eddie Guerrero bringing a sewage truck into the arena and spraying the Big Show with raw sewage . The next week on " SmackDown " , Guerrero defeated Rhyno ( Terry Gerin ) in a non - title match . Afterwards , the Big Show attacked Guerrero by using his signature lowrider as a weapon . Another featured bout on the undercard pitted Kurt Angle against John Cena . On the September 18 episode of " SmackDown " , Angle lost an Iron Man match to Brock Lesnar for the WWE Championship . The next week on " SmackDown " , Angle tried to call Lesnar out to the ring , demanding a rematch , but instead Cena came to the ring and attacked Angle . On the October 2 episode of " SmackDown " , two of the primary rivalries on SmackDown intertwined in a tag team match , where Lesnar and Cena faced the team of Angle and the Undertaker , which Cena and Lesnar won after Cena struck Angle with a chain . The next week on " SmackDown " , a rap battle took place between Cena and Angle , in which both men performed raps insulting each other . The battle ended with Angle attacking Cena and the two proceeding to fight in the ring . Another prominent match on the card was an " I Quit " match between Vince McMahon and his daughter , Stephanie McMahon . At the No Mercy event , however , Vince announced that Stephanie could score a pinfall or submission to win the match . The match build up began on the September 25 episode of " SmackDown " , when Stephanie interrupted her father ' s ceremony honoring the new WWE Champion Brock Lesnar to announce that the Undertaker would face Lesnar at No Mercy for the championship . Vince , angered by this , demanded that she retract the decision . When Stephanie did not , Vince announced that the two of them would face each other in an " I Quit " match at No Mercy . The next week on " SmackDown " , Vince offered Stephanie another chance to rescind the title match , which she refused and as a result Vince added the stipulation that if she lost , she would be forced to resign as authority figure of SmackDown ! . The following week , Linda McMahon , Vince ' s wife and Stephanie ' s mother , made Vince agree that if he lost the match , he would resign as WWE Chairman .