Eric Sim

Eric Sim (; born Shim Hyun-seok , January 2, 1989) is a South Korean-born Canadian YouTuber and former professional baseball player who played Minor League Baseball in the San Francisco Giants organization. Nicknamed "King of Juco" , he was drafted by the Giants in the 27th round of the 2010 MLB draft.

Early life

Sim grew up in Busan, South Korea, before his family immigrated to Canada at the age of 13. He attended high school at Robert Bateman Secondary School in British Columbia, and subsequently played for the Abbotsford Cardinals of the British Columbia Premier Baseball League (BCPBL) whilst in high school. After graduating high school, he desired to continue playing baseball. Although he had no college offers at first, he eventually signed with Colby Community College in Colby, Kansas, to play NJCAA baseball. He played there for a total of two years.

After that, Sim received a scholarship to play NCAA Division I college baseball at the University of South Florida in Tampa, Florida, where he batted .248/.366/.307 with the Bulls. He was then drafted by the San Francisco Giants in the 27th round of the 2010 MLB draft out of South Florida as a junior.

Independent League In 2015, Sim signed with the Winnipeg Goldeyes of the American Association Baseball League. He played in a total of 7 games. After the season, Sim informally retired from baseball.

During the COVID-19 pandemic, while throwing baseballs at a park, he felt "disappointed" that he only threw a baseball at 77 mph. Over the next year, he started training with concrete weights and posted progress videos of himself on social media platforms, such as Twitter and YouTube, trying to reach the goal of throwing 95 mph from training at home. In November 2020, he finally threw 95 mph, achieving his goal and completing his challenge. By that time, he had already gained notable popularity on social media.

After he completed his challenge, Sim kept regularly posting on YouTube, where he gained a cult following and also became known as 'King of Juco'. His content consists of videos containing different challenges, accomplishments, collaborations, recreations, as well as other topics. He also collaborated with MLB players in multiple videos, notably Fernando Tatís Jr., Jackson Merrill, Julio Rodríguez, Jose Trevino, and Trevor Bauer. On the platform, Eric Sim is also an advocate for junior college baseball and encourages young players, warning them of the challenges.

Since partnering with Trevor Bauer, Sim also served as a bullpen catcher for the Diablos Rojos del México of the Mexican League when Bauer signed with the team in 2024.

Listed at 6'2" and 215 lbs during his playing career, as of February 2025, Eric Sim is currently 295 lbs, with a body fat percentage of 39.2% based on DEXA scan info submitted on YouTube.

In November 2025, Sim appeared in a MrBeast video that featured elite athletes competing against robots in sports. Sim was matched up against "Neo", a humanoid robot that is equipped with a baseball launcher capable of reaching 150 mph (241 km/h). Sim was given 10 at-bats to hit a home run against Neo in order to win. On his 7th attempt, Sim hit a home run, giving Team Human a 2-0 lead in the best-of-seven competition.