
AEW All In edged one step closer on Wednesday night's special Grand Slam Mexico edition of Dynamite as MJF made his long-awaited return, Will Ospreay survived a brutal Street Fight and several championships changed hands inside a red-hot Arena México.
MJF stole the headlines by attacking Andrade moments after the Mexican star secured the number one entry in the Casino Gauntlet, while Ospreay defeated former United Empire teammate Mark Davis in one of the bloodiest matches of the year to continue building momentum ahead of his AEW World Championship clash with Kenny Omega.
Elsewhere, Hangman Adam Page, Bandido and Brody King captured the AEW World Trios Championship, Kyle Fletcher retained the International Championship against Mike Bailey and Willow Nightingale pinned Mercedes Moné just weeks before their AEW Women's World Championship showdown at All In.
The road to Wembley took another dramatic twist as MJF made his first appearance in weeks to send a clear warning to the entire AEW main event scene.
Earlier in the evening, Andrade delighted his home crowd by defeating Komander and Tommaso Ciampa to secure the coveted number one entry in the Casino Gauntlet at All In, appearing to take a major step towards another AEW World Championship opportunity.
The celebrations were short-lived.
Moments after Andrade addressed the Arena México crowd, MJF emerged from behind to smash him with the Triple B championship belt before reclaiming his Dynamite Diamond Ring and launching another vicious assault.
Declaring himself the "one true champion", MJF blamed Will Ospreay for costing him the AEW World Championship at Beach Break before promising to win next week's match for the number two entry in the Casino Gauntlet. With Kenny Omega and Ospreay still on a collision course at All In, MJF has now firmly inserted himself back into the world title picture.
If anyone questioned Ospreay's readiness for Kenny Omega, they were answered emphatically in the night's brutal main event.
After last week's explosive confrontation with the AEW World Champion, Ospreay was dragged into a violent Mexico City Street Fight by former friend Mark Davis, with barbed wire, steel chairs, garbage cans and even a fork all becoming legal weapons.
Both men were left bloodied as Davis repeatedly pushed Ospreay to the brink, driving him through chairs and attacking his open wounds with barbed wire. Yet Ospreay refused to stay down.
The former International Champion eventually turned the tide by wrapping barbed wire around Davis' head before connecting with a devastating Hidden Blade to bring an end to a savage contest and maintain momentum heading into his AEW World Championship opportunity at All In.
Championship gold changed hands later in the evening as Hangman Adam Page, Bandido and Brody King dethroned The Demand to become the new AEW World Trios Champions.
Backed by an electric Mexican crowd, the trio eventually overwhelmed Ricochet, Bishop Kaun and Toa Liona before combining for an emphatic finish that saw Bandido score the decisive pinfall.
The victory continues Hangman's impressive resurgence while giving Bandido a memorable championship moment in front of his home supporters.
Kyle Fletcher kept hold of the AEW International Championship after surviving an outstanding challenge from Mike Bailey in one of the night's best wrestling matches.
Bailey came within inches of dethroning the champion on several occasions, but Fletcher's resilience ultimately proved decisive as he delivered a devastating top-rope brainbuster to retain his title.
The celebration was interrupted almost immediately when Kazuchika Okada confronted Fletcher on the entrance ramp, adding another layer of intrigue to the increasingly fractured Don Callis Family heading towards All In.
Willow Nightingale builds momentum before Mercedes Moné showdown
AEW Women's World Champion Willow Nightingale also heads to Wembley with confidence after pinning Mercedes Moné in a six-woman tag team match.
Teaming with Jamie Hayter and Alex Windsor, Nightingale overcame Moné and Women's World Tag Team Champions Divine Dominion before catching her title challenger in a match-winning backslide.
The victory hands Nightingale valuable momentum before defending the AEW Women's World Championship at All In, while Hayter and Windsor also earned a Women's World Tag Team Championship opportunity after the result.
Fans can watch AEW All In live on DAZN later this month.
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