At ECW One Night Stand in June 2006, Rob Van Dam became the first superstar acquired by WWE after the purchase of World Championship Wrestling and Extreme Championship Wrestling in 2001 to complete the Grand Slam when he defeated John Cena for the WWE Championship. Booker T became the second star acquired by the purchase to complete the Grand Slam when he defeated Rey Mysterio for the World Heavyweight Championship at The Great American Bash in July 2006. Booker has held the World Tag Team, Intercontinental, and Hardcore titles.