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.[33][34] Goldberg defeated Triple H to become the new champion.[35][36] 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,[37][38] leading to an Iron Man match between Angle and Lesnar.