Edge, who won a number one contender's match to face Van Dam for the WWE Championship, was unable to win their match at Vengeance. One week later on "Raw", Edge pinned Van Dam in a triple threat match, after blindsiding Cena with the title belt, to become WWE Champion for the second time. This angle re-ignited Edge's feud with Cena, and he lost by disqualification at "Saturday Night's Main Event XXXIII" in order to retain the title. Subsequently, a match was made for the August event SummerSlam with the stipulation that if Edge disqualified himself, he would lose the title. At SummerSlam, Edge retained the title by pinning Cena after he hit him in the back of the head with a pair of brass knuckles when the referee was not looking. The night after SummerSlam, Lita disposed of Cena's customized "spinner" belt into the Long Island Sound at Edge's command, who declared it the end of the "Cena era" in his life. Edge later unveiled the new "Rated-R" version of the belt. Cena, however, interfered in Edge's match with a returning Jeff Hardy later that night, chasing him down to the outside of the building, assaulting him, and tossing Edge into the Long Island Sound. The following week, Cena made a deal with Edge: if Edge could defeat him in a match for the WWE Championship, he would sign a contract to move to "SmackDown!". Edge accepted, on the condition the match be a TLC match held at September's Unforgiven event in Edge's home town of Toronto. At Unforgiven, he lost the championship after Cena performed the FU on him, sending Edge crashing through two stacked tables from a ladder. At one point during the match, Cena locked in a modified STF while Edge was in a ladder, who later said he was legitimately choked unconscious, the first time he had been knocked out in a match during his career.