Dwayne Johnson’s Career Transformation: Training Like Never Before for MMA Role

Dwayne Johnson is undertaking a significant career transformation as he prepares for his role as MMA fighter Mark Kerr in the upcoming biopic, The Smashing Machine. This shift marks a new phase in his acting journey, moving beyond his established action star image. Johnson’s dedication to embodying Kerr involves an intense training regime, including cardio and MMA practices, and a 30-pound weight gain to fit the fighter’s physique. Similarly, Sydney Sweeney is also undergoing a transformative process to portray real-life boxer Christy Martin in the film Christy. To authentically represent Martin, Sweeney gained 30 pounds and trained extensively with boxing coaches, weight trainers, and nutritionists.

Johnson, known widely as The Rock and a former WWE star, has evolved through several career phases—from wrestling to mainstream acting in franchises like Fast & Furious and family films such as Moana. Now, his role in The Smashing Machine represents a dramatic challenge that demands both physical and emotional authenticity for the character. Meanwhile, Sweeney, who gained prominence through roles like Cassie in Euphoria, is taking on more serious dramatic work, moving past her reputation as a sex symbol partly shaped by advertising campaigns like American Eagle.

Both actors have also undergone physical transformations aided by makeup and costuming, making their appearances nearly unrecognizable to highlight the brutal reality of professional fighting. This approach demonstrates their commitment to deeply immersive performances in these biographical dramas.

Dwayne Johnson
Image of: Dwayne Johnson

Breaking New Ground: Redefining Career Paths Through Challenging Roles

Dwayne Johnson’s career has spanned multiple entertainment fields, but recent setbacks with films like Black Adam and Red One have motivated him to explore more demanding roles that showcase his dramatic capabilities. At the 82nd Venice International Film Festival, Johnson expressed his desire to step outside of his usual box office persona, stating,

“I just had this burning desire and voice that was saying, ‘What if there is more and what if I can?’ Sometimes it’s hard for us to know what we’re capable of when we’ve been pigeonholed into something.”

This introspective moment reflects Johnson’s intention to be recognized as an actor capable of depth and range beyond action and blockbuster hits. His participation in an A24 biopic directed by Benny Safdie signals this deliberate career pivot toward more critically challenging material.

Similarly, Sydney Sweeney has steadily expanded her acting repertoire. Prior to Christy, she earned praise for her performance in Immaculate and took on a complex real-life character in HBO’s Reality. Despite her proven talent, her public image is often overshadowed by her status as a sex symbol and her involvement in controversial advertising. Christy represents perhaps her most high-profile opportunity to shift audience perceptions and affirm her dramatic versatility.

Both Johnson and Sweeney’s willingness to embrace physically and emotionally demanding roles illustrates a shared resolve to redefine their careers through authentic storytelling of real fighters who overcame adversity.

Assessing the Awards Potential for Johnson and Sweeney’s Performances

Following their premieres at major film festivals, early reviews offer promising signs for Johnson’s portrayal in The Smashing Machine, which currently holds a 79% critic rating on Rotten Tomatoes. Critics have highlighted his impressive embodiment of Mark Kerr, with many noting that award season often rewards actors who undergo significant transformations for their roles. Directed and written by Benny Safdie, whose previous work has earned award recognition, this film is well poised to attract further critical attention.

In contrast, Christy by director David Michôd has received more mixed feedback, with a 65% critic score. While the film’s overall reception could affect its awards momentum, Sweeney’s performance has garnered praise, leaving room for the possibility that she might emerge as a contender, particularly as her role offers a compelling narrative of a pioneering woman in boxing.

The films’ positioning in the awards landscape is shaped not only by the lead performances but also by the reputations of their directors and production teams. The Smashing Machine’s involvement with producers such as Johnson himself, Beau Flynn, and Dany Garcia adds to its weight, while Christy features a supporting production team including Kerry Kohansky-Roberts and Teddy Schwarzman. Their combined efforts contribute to the films’ ambitions and potential influence during the upcoming awards season.

Details and Context of The Smashing Machine and Christy

The Smashing Machine, set for release on October 3, 2025, is a drama and biographical film exploring the life of Mark Kerr, a renowned MMA fighter. At 123 minutes in length, it focuses on Kerr’s career and personal challenges, with Emily Blunt co-starring as Dawn Staples. This movie dives into the intensity of professional fighting and the emotional costs associated with the sport. Benny Safdie’s dual role as director and writer ensures a focused vision, supported by producers including Johnson and his team.

Christy, scheduled for release on November 7, 2025, is a drama chronicling the rise of Christy Martin, a trailblazing female boxer in the 1990s. Running 135 minutes, the film looks at her ascent under promoter Don King, her struggles with personal adversity, and her impact on women’s boxing. Sydney Sweeney leads in the titular role, with Ben Foster portraying James V. Martin. David Michôd directs and co-writes the film alongside Mirrah Foulkes. The production includes numerous producers, among them Sweeney herself, marking her investment in the project’s success and authenticity.

The Broader Significance of This Career Shift

Dwayne Johnson’s and Sydney Sweeney’s choices to take on roles of real fighters reflect a deeper ambition to challenge typecasting and demonstrate the breadth of their acting skills. For Johnson, who has long been a dominant box office presence, this transformation could redefine his legacy from action star to serious actor. For Sweeney, this film presents a critical opportunity to cement her status as a performer capable of nuanced, grounded roles beyond the controversies and image that have sometimes clouded her achievements.

By embracing these physically demanding, emotionally intense parts, both actors underscore their dedication to authenticity and artistic growth. Their portrayals not only pay tribute to the fierce realities faced by figures like Mark Kerr and Christy Martin but also position Johnson and Sweeney as contenders for critical acclaim and future challenging roles. As these films approach wider release, audiences and critics alike will watch closely to see if this transformation produces lasting changes in their careers.