The Rock then lost the WWF Championship to Kurt Angle, at No Mercy, in October. The next month, the Rock feuded with Rikishi and defeated him at Survivor Series. The Rock wrestled a six-man Hell in a Cell match for the WWF Championship, at Armageddon, which Angle won to retain the title. On the December 18 episode of "Raw", the Rock won the WWF Tag Team Championship with The Undertaker, defeating Edge and Christian, before losing it back to them the next night at a "SmackDown!" taping. In 2001, the Rock continued to feud with Angle over the WWF Championship, culminating at No Way Out in February, where he pinned Angle to win the WWF Championship for a sixth time. The Rock then feuded with the Royal Rumble winner, Stone Cold Steve Austin, whom he lost the title to at WrestleMania X-Seven after Austin allied with Vince McMahon, who interfered on his behalf. On the next night's "Raw Is War", during a steel cage title rematch, Triple H attacked the Rock, allying with McMahon and Austin and helping Austin retain the championship. Austin and Triple H then formed a tag team called The Power Trip, while the Rock was indefinitely suspended in storyline. Johnson used this time off to act in "The Scorpion King".