On July 9, 2001, the stars of WCW and Extreme Championship Wrestling (acquired by Stephanie McMahon in a related storyline) joined forces, forming "The Alliance" with WCW owner Shane McMahon and the new owner of ECW Stephanie McMahon leading the charge, with the support and influence of original ECW owner Paul Heyman. At Invasion, Stone Cold Steve Austin turned on WWF and helped the Alliance win the Inaugural Brawl. At Survivor Series, WWF finally defeated WCW and ECW in a "Winner Takes All Match" and the angle was concluded. In the aftermath of the Invasion angle, WWF made several major changes to their product. Ric Flair returned to the WWF as "co-owner" of the company, feuding with Vince McMahon. Jerry Lawler returned to the company after a nine-month hiatus, after his replacement on commentary, Paul Heyman, was fired on-screen by Vince McMahon. Several former Alliance stars were absorbed into the regular WWF roster, such as Booker T, The Hurricane, Lance Storm, and Rob Van Dam. At Vengeance 2001, Chris Jericho went on to unify the WCW Championship and WWF Championship, beating both The Rock and Steve Austin on the same night.