The $4.2 Million Split: Did Eric Sim (King Of Juco) Really Leave Momentum? The Full Story

The question of "Did Eric Sim leave Momentum?" has been one of the most persistent and curious queries among the baseball content community for the last two years. As of today, December 17, 2025, the answer is a resounding "Yes," but the full story behind the separation is far more complex than a simple departure. It involves a major business split, the acquisition of a massive personal brand, and the launch of a new independent media empire for the former professional baseball player turned viral sensation.

The entity in question is not a financial firm, but rather Momentum Sports, a baseball-focused content and merchandise brand that played a pivotal role in launching Eric Sim's career as the "King of Juco." Sim’s departure was not a dramatic firing or a sudden falling out, but a calculated business decision that allowed him to take full control of his multi-million-follower brand and its future direction.

Eric Sim: Biography, Career Path, and The King of Juco Brand

Eric Sim, known globally by his moniker "King of Juco," is a South Korean-Canadian former professional baseball player who has successfully transitioned into one of the most influential content creators in the baseball world. His unique blend of humor, high-level baseball knowledge, and relentless "JUCO Bandit" mindset has garnered him millions of followers across social media platforms.

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Full Biography and Career Snapshot:

• Full Name: Eric Sim (Korean: 심 에릭)
• Nickname: King of Juco, JUCO Bandit
• Born: January 3, 1989 (Age 36 as of 2025)
• Nationality: South Korean-Canadian
• Amateur Career: Attended multiple community colleges (Junior Colleges or JUCOs), which later inspired his famous brand.
• Professional Career: Drafted by the San Francisco Giants in the 27th round of the 2010 MLB Draft. He spent several years playing Minor League Baseball (MiLB) as both a catcher and a relief pitcher.
• Post-Playing Career: Transitioned into a full-time content creator and YouTuber, focusing on baseball vlogs, training videos, and collaborations with other athletes and influencers.
• Key Content Entities: The King of Juco YouTube channel, JUCO Bandit Gear merchandise line.

Sim’s background as a Minor League player gave him a unique perspective—the "underdog grind"—which resonated deeply with fans. His content often features high-intensity training, humorous challenges, and the promotion of the JUCO Bandit mentality: working hard with limited resources. This massive digital success is what led to the initial partnership with Momentum Sports and eventually, the highly publicized split.

The Truth Behind the Split: Why Eric Sim Left Momentum Sports

The separation between Eric Sim and Momentum Sports (often referred to simply as "Momentum") was a major topic of discussion among his fanbase, especially after he released a video titled "Why I Left Momentum (The Truth)." The core of the issue was not a personal feud, but a fundamental business disagreement over the ownership and creative control of his brand.

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The Business Relationship with Momentum

Momentum Sports, or Momentum Baseball, was a brand that collaborated with several content creators, including Sim, to produce videos, manage merchandise, and build a collective presence. For a period, Eric Sim was a key figure in the Momentum Sports team, often appearing alongside other creators like Tosh Semlacher, Cole Acheronti, and Marika Lyszczyk in joint projects, including events with the Kalamazoo Growlers in the Northwoods League.

The Desire for Independence and Brand Ownership

As Eric Sim's popularity exploded, his personal brand, King of Juco, rapidly outgrew the collective structure of Momentum. The split was driven by Sim's desire for full autonomy. According to an official statement released by the Momentum YouTube channel, Eric Sim "expressed a desire" to control his brand entirely.

The separation was ultimately an amicable business transaction. The crucial detail is that Momentum "chose to sell the King of Juco brand to h[im]." This means that Eric Sim, or his independent team, successfully purchased the rights, assets, and possibly the YouTube channel associated with the King of Juco brand from Momentum. This was a strategic move allowing Sim to manage all aspects of his content, merchandise (like JUCO Bandit Gear), and future sponsorships without a third party.

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While some fan speculation suggested that Momentum may have "stalled out making an agreement" with Eric, the final outcome was a clean, negotiated business split. This move freed Sim to pursue larger, independent projects and endorsements, solidifying his status as a major independent content creator.

Eric Sim’s New Ventures and The King of Juco Empire in 2025

Since the separation from Momentum, Eric Sim has significantly expanded his digital empire, leveraging his massive social media reach and the full ownership of the King of Juco brand. His current activities are focused on high-profile collaborations, unique baseball challenges, and the expansion of his entrepreneurial efforts.

The Satirical Seattle Mariners Contract

One of the most talked-about recent events was the widely circulated news—which was actually a satirical piece of content—that Eric Sim had signed a $4.2 million, one-year deal with the Seattle Mariners. While this was a clickbait-style video designed for entertainment, it highlights his ability to generate massive viral energy and blur the lines between content and reality. This type of high-production, narrative-driven content is a hallmark of his post-Momentum career.

Expansion of the JUCO Bandit Brand

With full control, the JUCO Bandit Gear merchandise line has become a central focus. The brand is no longer just a content tie-in but a legitimate lifestyle apparel company, featuring the iconic "Lift Big, Throw Gas, Hit Bombs" mantra. This entrepreneurial success is the tangible result of the separation from the Momentum collective.

Topical Authority and Key Collaborations

Eric Sim continues to work with high-profile figures in the baseball world. He has produced content with other major influencers and professional athletes, solidifying his role as a central figure in the online baseball community. His content frequently covers topics like the Minor League experience, baseball training, and in-depth equipment reviews, providing topical authority to millions of aspiring players and fans.

Key Entities and LSI Keywords Associated with Eric Sim's Current Success:

• Content Creation: YouTube, Sports Vlogs, Baseball Challenges, Social Media Influence.
• Business & Brand: JUCO Bandit, JUCO Bandit Gear, Independent Content Creator, Merchandise Line.
• Baseball Context: Minor League Baseball (MiLB), San Francisco Giants, MLB Draft, Pitching Mechanics, Catching Drills, Northwoods League.
• Collaborators/Related: Tosh Semlacher, Trevor Bauer (associated content), Seattle Mariners (satirical).

In conclusion, the question "Did Eric Sim leave Momentum?" is definitively answered. Yes, he left Momentum Sports through a mutually agreed-upon business separation. The key takeaway is that this move was a strategic step, allowing Eric Sim to secure the ownership of his highly valuable King of Juco brand and transition from a collaborator within a collective to a fully independent, multi-million-follower content mogul in the world of online baseball media.