Background

On April 25, 2021 at Rebellion, it was announced by Impact Wrestling that Slammivesary would take place in July 2021 at the Skyway Studios in Nashville, Tennessee.^[1][2][3] On June 3, Impact Wrestling announced that Slammiversary would be open to a limited number of paying fans, with tickets on sale the following morning.^[4] It marked the first time Impact would have ticketed fans in attendance for an event during the COVID-19 pandemic, albeit in a limited capacity; the last Impact event to have ticketed fans was on March 7, 2020, just before the pandemic took effect.^[5]

Storylines

The event featured professional wrestling matches that involved different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portray heroes, villains, or less distinguishable characters in scripted events that build tension and culminate in a wrestling match or series of matches.

Like the previous year, Impact released a video package to promote Slammiversary, featuring images of various wrestlers who had previously appeared with Impact, stars of partner promotion New Japan Pro-Wrestling and many of whom had been recently released by WWE. Included were Samoa Joe, Mickie James, Chelsea Green (known in Impact as Laurel Van Ness), Kazuchika Okada, No Limit (Tetsuya Naito and Yujiro Takahashi), and The Great Muta; also featured were the flags of Mexico, Australia, and Canada, teasing Samurai Del Sol, The IInspiration, and an unknown third party.^[1][6][7] On May 20, a new video was released featuring new content, including the logo of Bullet Club, and phrases like a blue and pink "II" (for The IInspiration), "Forgotten" (referencing Steve Cutler and Wesley Blake of The Forgotten Sons), and "YES!" (referring to Bryan Danielson).^[8]

On the Impact! before Against All Odds, Impact EVP Scott D'Amore and All Elite Wrestling (AEW) president Tony Khan announced that the winner of the Impact World Championship main event between champion Kenny Omega and challenger Moose will go on to Slammiversary, where they defend the championship against Sami Callihan, who has been attempting to get into the title picture while bearing the brunt of frequent attacks and manipulation from Omega and his allies (The Good Brothers (Doc Gallows and Karl Anderson) and Impact EVP Don Callis).^[9][10] At Against All Odds, Omega retained the title by defeating Moose. After the match, Callihan appeared and attacked The Elite. As Callihan was about to attack Omega, Callis fired Callihan, which upset D'Amore.^[11] On the following episode of Impact!, Tommy Dreamer - acting as a spokesman for the Anthem Sports & Entertainment board of directors - announced that the board had reinstated Callihan and fired Callis from his EVP role, making the world title main event official.^[12][13] On July 13, it was announced that they will face off in a No Disqualification match.^[14]

At Against All Odds, Petey Williams, Trey Miguel, Ace Austin, Chris Bey, and Rohit Raju competed in a five-way match to determine the number one contender to Josh Alexander's X Division Championship. However, Austin's bodyguard Madman Fulton interfered and attacked all other participants, leading to the match being ruled a no contest.^[11] On the June 17 episode of Impact!, it was announced that Alexander will defend the X Division Championship at Slammiversary against all five men in an Ultimate X match, the first to be promoted in over two years.^[12][15]

On the May 6 episode of Impact!, Moose defeated James Storm in a match to qualify for the world title number one contender's six-way match at Under Siege. After the match, Moose would deliberately injure Storm's ankle when he wrapped it in a chair, before Chris Sabin, who had qualified for the Under Siege match earlier in the night, would come and save Storm.^[16] On the Impact! after Against All Odds, when Moose tried to hold the show hostage and get Scott D'Amore's attention, Sabin, whose knee was injured by Moose at Under Siege, returned to foil Moose's plans. Backstage, Sabin challenged Moose to a match at Slammiversary, which he accepted.^[12][13]

After parting ways with her former allies Kimber Lee and Susan, and having defeated the pair in back-to-back non-title matches,^{[17][18][19][20]} Impact Knockouts Champion Deonna Purrazzo claimed that there is no one left for her to beat. Later that night, after retaining her title in an open challenge against Lady Frost,^[21] seven-time Knockouts Champion and Impact Hall of Famer Gail Kim would confront Purrazzo, stating that she will defend her title at Slammiversary against a mystery opponent of her and Scott D'Amore's choosing.^[22][23]

On the July 1 episode of Impact!, Impact World Tag Team Champions Violent By Design (Eric Young, Deaner, Joe Doering, and Rhino) interrupted a tag team match between the team of Rich Swann and Willie Mack and the team of TJP and Fallah Bahh, a match that had big tag team title implications.^[19][24] The following week on Impact!, when the three teams confronted each other in the ring, they were joined by The Good Brothers, who looked to become the champions once again. Impact's new advisor Tommy Dreamer then appeared, stating that Violent By Design would defend the championship against all challengers in a four-way tag team match at Slammiversary.^[22][23] On July 16, it was announced that TJP was removed from the match.^[25]

Following the June 24 episode of Impact!, after failing to capture the Impact World Tag Team Championship from Violent By Design, Eddie Edwards would challenge his tag team partner Satoshi Kojima to a match the following week. However, as the challenge was accepted, W. Morrissey would intrude on their conversation, calling the pair a couple of frauds - for Morrissey believes professional wrestling is all about looking out for one's self, and not having any "real friends".^[26] The following week on Impact!, while Kojima waited for Edwards to enter the ring, Morrissey appeared on the titantron revealing he attacked Edwards in the parking lot.^[19][24] On the July 8 episode of Impact!, before competing in a 3-on-1 handicap match, Morrissey accepted Edwards' challenge for a match at Slammiversary.^[22][23]

On the July 1 episode of Impact!, after conflicting with Impact Knockouts Tag Team Champions Fire 'N Flava (Kiera Hogan and Tasha Steelz), Havok and Rosemary decided to officially challenge for the titles, leaving a tarot card on Scott D'Amore's desk as a notice. However, Hogan and Steelz felt that they have not earned the opportunity, so D'Amore booked a number one contender's match between Havok and Rosemary, and Kimber Lee and Susan.^[19][24] The following week on Impact!, Havok and Rosemary won the match,^[22][21] making it them against Fire 'N Flava on the Countdown to Slammiversary pre-show.^[27]

At Rebellion, Brian Myers defeated former friend Matt Cardona,^[28] before Cardona got his win back the following Impact! in doing so getting himself entered into a six-way match to determine the number one contender for the World Championship at Under Siege.^[29] Tired of feeling like he has been screwed by Cardona, Myers attacked Cardona backstage on the May 20 episode of Impact! before throwing him into a camera, breaking his orbital bone.^[30][31] On the July 8 episode of Impact!, after Myers and his protégé Sam Beale attacked Jake Something after the latter defeated Myers, Cardona returned for the save.^[22][21] The following week on Impact!, when the four men had an in-ring encounter, Cardona was given a low blow from Tenille Dashwood, who had previous history with Cardona.^[32][33] Scott D'Amore would meet with Cardona backstage, booking an Intergender tag team match for Slammiversary between the team of Cardona and a mystery partner, and the team of Myers and Dashwood.^[34]