The Grand Slam is an accomplishment recognized by various professional wrestling promotions in the United States and Japan. It is a distinction given to a professional wrestler who has won four specific championships within a promotion throughout the course of their career. Promotions that recognize this include WWE (since 1997), Impact Wrestling (since 2009), Ring of Honor (since 2018) and New Japan Pro-Wrestling (since 2021). The four titles typically include three singles championships, one of them usually being a world title, plus a tag team championship. National promotions WWE (1997) In WWE (formerly WWF), the term "Grand Slam" was originally used by Shawn Michaels to describe himself upon winning the European Championship on September 20, 1997. Michaels previously held the WWF Championship, Intercontinental Championship, and the World Tag Team Championship—the titles that composed the Triple Crown. In May 2001, the promotion's website indicated that the Hardcore Championship was an acceptable substitute for the European Championship in the Grand Slam. Kane, who had defeated Triple H for the Intercontinental Championship at Judgment Day on May 20, 2001, was acknowledged as a Grand Slam winner as he had "become the only superstar in World Wrestling Federation history that has held the Intercontinental title as well as the Hardcore, Tag Team and WWF titles". In April 2006, Kurt Angle was noted as being a former Grand Slam winner on WWE.com, having won the WWE, WWE Tag Team, Intercontinental, and European Championship, indicating that WWE considered the WWE Tag Team Championship to be an acceptable substitute for the World Tag Team Championship. In August 2007, WWE.com published an article listing Shawn Michaels' championship reigns that completed the Grand Slam. They included the WWE, World Heavyweight, World Tag Team, Intercontinental, and European Championship. The inclusion of the World Heavyweight Championship indicated that WWE considered the title to be an acceptable substitute for the WWE Championship in completing the Grand Slam. 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,