Deji’s Shocking Transformation: 5 Unforgettable Moments From His Weight Loss Journey To Boxing Success

The viral question "Did Deji get fat?" is more than just a passing meme; it represents a pivotal chapter in the life of one of YouTube's most resilient stars, Oladeji Daniel Olatunji. The short answer is yes—Deji did gain a significant amount of weight early in his boxing career, a period of poor conditioning that led to public scrutiny and a string of demoralizing defeats. This public low point, however, became the ultimate catalyst for an incredible, career-defining body transformation that continues to inspire his millions of fans in late December 2025.

Today, the narrative has completely flipped. Deji has shed the "fat" label, transforming from a heavily criticized amateur boxer into a legitimate crossover fighter known for his conditioning and dedication. His journey is a powerful testament to mental fortitude, consistency, and the dramatic impact a focused fitness regimen can have on both a person's physique and their professional success in the demanding world of celebrity boxing.

Oladeji "Deji" Daniel Olatunji: Full Biography & Profile

Oladeji Daniel Olatunji, known simply as Deji, is a prominent English YouTuber, social media personality, and professional crossover boxer. His career is characterized by his early success on YouTube, his famous rivalry with his older brother, KSI, and his dramatic evolution within the influencer boxing scene.

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• Full Name: Oladeji Daniel Olatunji
• Alias: Deji, "The Tank," formerly "ComedyShortsGamer" (CSG)
• Date of Birth: December 9, 1996
• Nationality: British (United Kingdom)
• Height: 5 feet 7½ inches (172 cm)
• Occupation: YouTuber, Crossover Boxer
• Boxing Division: Light Heavyweight (has also fought at Super Middleweight and Heavyweight)
• Noteworthy Opponents: Jake Paul, Alex Wassabi, Fousey, Floyd Mayweather Jr.
• Current Status (Late 2025): Active and consistently training, focusing on maintaining peak physical condition for future bouts.

The Truth Behind the "Did Deji Get Fat" Question

The question "Did Deji get fat?" gained traction during the early years of his boxing career, specifically between his first fight against Jake Paul in 2018 and his subsequent bouts. At the time, Deji was criticized for a lack of discipline and conditioning, which was visibly reflected in his physique during weigh-ins and fights.

His initial approach to training was often inconsistent, resulting in him carrying excess body fat and appearing out of shape compared to his opponents. This period was a major talking point in the YouTube community, with many fans and critics expressing concern over his health and dedication. This public shaming, however, became the fire he needed to ignite a monumental change in his lifestyle.

The turning point arrived when Deji committed fully to his fitness journey, partnering with professional trainers and the renowned BTX Body Transformation team. This collaboration marked the beginning of "The Tank's" true transformation, where he began to shed the weight, build muscle, and develop the stamina required for elite-level boxing. His success is now often cited as an inspiration, proving that public perception can be completely rewritten through hard work and consistency.

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5 Unforgettable Milestones in Deji's Fitness and Boxing Transformation

Deji’s path from a criticized YouTuber to a respected boxer is filled with dramatic moments. These five milestones highlight the most significant steps in his journey to silence the critics and conquer the question, "Did Deji get fat?"

1. The Wake-Up Call: Early Losses and Poor Conditioning

Deji's first few fights, particularly his debut against Jake Paul, exposed a glaring weakness: his physical conditioning. He often gassed out in later rounds, and his weigh-in appearances showed a body far from an athlete's peak. These losses were humiliating, but they served as the crucial wake-up call, forcing him to confront his diet and training habits. This period is the origin of the "fat Deji" narrative that he has worked so hard to overcome.

2. The BTX Body Transformation Partnership

The decision to join BTX Body Transformation was arguably the most important professional move Deji made outside the ring. This partnership provided him with a structured, science-backed approach to nutrition and training, helping him to efficiently lose body fat and build the muscle density necessary for the Light Heavyweight division. The content documenting his progress became viral, turning a private struggle into a public, inspirational journey.

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3. The Alex Wassabi Redemption and First Win

After a string of losses, Deji’s fight against Alex Wassabi was a must-win for his career and his confidence. He showed up to the weigh-in in visibly the best shape of his life. His victory in this bout was not just a win on his record; it was a physical and psychological triumph, demonstrating that his hard work and transformation were paying off. This win effectively silenced many of the long-time critics who had mocked his physique and dedication.

4. Stepping Up to Floyd Mayweather Jr.

Fighting the legendary Floyd Mayweather Jr., even in an exhibition, was a massive leap in credibility for Deji. While the result was a loss, the fact that he was in the ring with one of the greatest boxers of all time, and looked physically prepared and competitive for a significant portion of the fight, was a huge statement about his current conditioning. It solidified his status as a serious contender in the crossover boxing world, far removed from the out-of-shape fighter of the past.

5. Maintaining Peak Condition for Fousey and Beyond

In his subsequent bouts, such as his fight against Fousey, Deji continued to impress with his consistent conditioning. He successfully made weight and displayed excellent cardio and power throughout the fight, proving that his transformation was not a one-off event but a permanent lifestyle change. As of late 2025, Deji is known for maintaining his physique, a key factor that allows him to compete across various weight classes, from Super Middleweight up to Light Heavyweight. His current focus is on consistency, power development, and strategic movement, ensuring the "fat Deji" narrative is firmly in the past.

Deji's Current Physique: Is He Still "The Tank"?

As of late 2025, the answer to "Did Deji get fat?" is a resounding no. Deji has successfully redefined himself as a dedicated athlete. His current physique is lean, muscular, and well-conditioned, a direct result of his ongoing commitment to training at places like Gritness Gym and sticking to the principles of his BTX regimen.

He has moved past the initial weight loss phase and is now focused on optimizing his power-to-weight ratio, enabling him to perform effectively in the Light Heavyweight division. Fans and commentators consistently praise his improved stamina and punching power, both of which are directly tied to his dramatic body transformation. The name "The Tank" has evolved from a playful alias to a description of his durable, powerful, and physically imposing presence in the ring.

Deji's journey is a powerful example of how a celebrity can turn negative public opinion into positive motivation. By addressing the criticism head-on and committing to a rigorous fitness journey, Oladeji Daniel Olatunji has not only improved his boxing career but also created a legacy of resilience, proving that consistency is the only true blueprint for a lasting body transformation.