 During an episode of Raw after SummerSlam , Goldberg challenged Triple H to another match for the World Heavyweight Championship . This match took place at the Unforgiven pay @-@ per @-@ view on September 21 , 2003 with a stipulation that , should he lose , Goldberg would retire from WWE . Goldberg defeated Triple H to become the new champion . After SummerSlam Kurt Angle focused his attention on The Undertaker , whom he wrestled in a match for the WWE Championship during an episode of SmackDown ! on September 4 , 2003 . During the match , Lesnar attacked both wrestlers with a folding chair , leading to an Iron Man match between Angle and Lesnar . Lesnar won five falls during the match , while Angle won four , and as a result Lesnar won the title . 
