In other prominent matches, Deonna Purrazzo defeated Thunder Rosa to retain the Impact Knockouts Championship, and Josh Alexander defeated Ace Austin, Chris Bey, Petey Williams, Rohit Raju, and Trey Miguel in an Ultimate X match to retain the X Division Championship in the opening bout.

The event also marked the Impact debuts of Jay White, No Way, and Thunder Rosa, and the returns of Mickie James and Chelsea Green (formerly known as Laurel Van Ness).

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.

[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.

[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][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.

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.

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.

[34] During the event, Madman Fulton and Shera arrived and angrily confronted the referee for having banned them from ringside during the Ultimate X match where their partners, Austin and Raju respectively, had competed.

After Deonna Purrazzo retained her Knockouts Championship against Thunder Rosa, she planned to make a speech but was interrupted by the returning Mickie James.

Following the conclusion of the main event, Kenny Omega, Don Callis, and The Good Brothers were all celebrating in the ring when Jay White entered and stared them down.