At Royal Rumble in early 2000, The Rock entered in the Royal Rumble match and lasted until he and The Big Show were the final two men. In the final moment of the match, The Big Show was seemingly going to throw The Rock over the top rope in a running powerslam-like position, but when they got to the apron The Rock reversed the throw, sending The Big Show to the outside floor and then came back up.[54] The Rock's feet, however, hit the floor first, although those watching the event did not see that. The Big Show attempted to prove that The Rock's feet, not his, touched the ground first. He provided video footage showing that he was the rightful winner. Despite that, the decision that The Rock had won the Rumble match could not be reversed, so a number one contender's match for the WWF Championship at No Way Out was held, which saw The Big Show come out on top after Shane McMahon interfered, knocking The Rock in the head with a steel chair as he attempted to finish off his opponent with a People's Elbow.[55] The Rock later defeated The Big Show on March 13, 2000 edition of Raw is War to regain the right to face the WWF Champion, Triple H, at WrestleMania 2000 in a Fatal Four-Way Elimination match where The Big Show and Mick Foley competed, as well.[56][57] Each competitor had a McMahon in their corner; for Triple H, his on-screen wife and then off-screen girlfriend Stephanie McMahon; for Mick Foley, the matriarch Linda McMahon; for The Rock, Vince McMahon; and in Big Show's corner, Shane McMahon.[57][58] Triple H retained the title when Vince betrayed The Rock, hitting him with a chair, allowing Triple H to pin The Rock for the three-count.
Over the next couple of months The Rock feuded with Triple H over the WWF Championship. A month after the match at WrestleMania 2000, The Rock had a rematch with Triple H at Backlash in which The Rock won his fourth WWF Championship, after Stone Cold Steve Austin made a brief return and intervened on The Rock's behalf.[60][61][62] Later, at Judgment Day, the two had an Iron Man match with Shawn Michaels as the special guest referee, that saw The Undertaker return.[63] The Rock got disqualified and lost the title, as a result of The Undertaker attacking Triple H.[63] The following night on Raw is War, The Rock got his revenge, taking out the entire McMahon-Helmsley Faction with the help of The Undertaker.[64] He later won his fifth WWF Championship at King of the Ring in a tag team match, which saw him team up with Kane and The Undertaker to fight Vince McMahon, Shane McMahon and Triple H.[65][66] He successfully defended the championship against superstars such as Chris Benoit, Kurt Angle, Triple H, Kane, The Undertaker, and Shane McMahon.[61][67][68]
The Rock later lost the WWF Championship to Angle at No Mercy in October.[61][69] During this time, he feuded with Rikishi and defeated him at Survivor Series.[61][70] He also participated in a six-man Hell in a Cell match at Armageddon for the WWF Championship, in which Kurt Angle retained the title.[61][71] Around that same time, Rock held the WWF Tag Team Championship with The Undertaker and the duo exchanged the titles with Edge and Christian.[61][72]
In 2001, The Rock continued his feud with Angle over the WWF Championship, which they eventually settled at No Way Out. After a battle that saw both wrestlers kick out of each other's finishers, The Rock finally came out on top and won the WWF Championship for the sixth time.[61][73][74] Afterwards, he feuded with the Royal Rumble winner, Stone Cold Steve Austin. The Rock went into WrestleMania X-Seven as the WWF Champion, but he was defeated after Austin used Mr. McMahon to win the title.[61][75] During a Steel Cage match with Austin in a rematch for the WWF Championship on the following night's Raw is War, Triple H came down to the ring with a sledgehammer. Many thought he was coming to aid The Rock, due to the hatred between Austin and Triple H (and an argument with Vince earlier in the night), but it transpired that he had joined the Austin/McMahon partnership by hitting The Rock instead.[76] Austin and Triple H became a tag team and called themselves "The Two-Man Power Trip".[77] Rock went on to film the movie "The Mummy Returns" after a storyline suspension.[15]