IMPACT Wrestling: Slammiversary 2021: Our world changes again at one of IMPACT Wrestling's biggest events of the year which is sure to be filled with copious amounts of surprises. This year includes what has the potential to be some game-changing wrestling since IMPACT World Champion Kenny Omega defends his title against Sami Callihan, and for the first time in over two years, one of the most dangerous match types in IMPACT Wrestling history returns as Josh Alexander defends his X-Division Championship in an Ultimate X Match against Trey Miguel, Ace Austin, Chris Bey, Petey Williams, and Rohit Raju.