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Welcome Aboard!

"Missouri Mariners Athletics is more than a sports program—we are a movement dedicated to shaping the future. Through competitive baseball and softball, we cultivate discipline, teamwork, and resilience, preparing young athletes for the game and life. Our mission extends beyond the field, fostering character, leadership, and a sense of community. At Missouri Mariners Athletics, we don’t just build athletes—we build future champions in sports and life."

Organization Inspiration:

The name Mariners holds deep meaning for us, bringing to mind the legendary Ken Griffey Jr.—a player who redefined the game with his swagger, grit, and passion. His relentless work ethic, electrifying play, and pure love for baseball set a standard we strive to emulate.

At Missouri Mariners Athletics, we embrace Griffey’s championship mentality, inspiring our athletes to play with joy, confidence, and intensity. Just like "The Kid," we believe in competing with heart, developing skills with purpose, and playing the game the right way.

Our mission goes beyond youth baseball and softball training—we're building resilient athletes and future leaders who bring that same energy to every aspect of life. Through elite coaching, skill development, and a competitive edge, we help young players unlock their full potential, preparing them for high school, college, and beyond.

Join us in fostering a culture where dedication meets fun, fundamentals fuel success, and every player brings their own swagger to the game. ⚾🔥 #TheKid #MissouriMariners #PlayWithPassion

Meet the Owners |Missouri Mariners Athletics

Building the Future of Youth Sports in St. Charles County

 

GERRION GRIM III

 

Athlete | Coach | Mentor | Community Leader | Entrepreneur

📍 O’Fallon, MO | ⚾ Professional Baseball & Softball Instructor | 🎤 National Recording Artist

Career Highlights & Achievements:

🏆 St. Charles County Amateur Sports Hall of Fame – Inductee (2012)

  • Recognized for outstanding contributions and achievements in amateur sports.

⚾ Drafted by the Baltimore Orioles – 14th Round, Pick 421 (2014)

  • Reached elite levels of professional baseball, gaining first-hand experience in the highest levels of the sport.

👥 Professional Baseball & Softball Instructor (2014 – Present)

  • 10+ years of coaching experience in skill development, mechanics, and game strategy.

  • Worked with 300+ athletes (ages 8-22) through private lessons, clinics, and mentorship.

🏅 Mountaire Outstanding Community Service Award (2017 – Salisbury, MD)

  • Honored for exceptional leadership and commitment to community development.

🎓 St. Charles Community College – Volunteer Assistant Coach

  • Softball (2019 – Present) | Baseball (2021 – Present)

  • Assists in player development, recruitment, and team strategy for both programs.

🔥 The Hitting Zone – Lead Baseball/Softball Instructor (2014 – 2020)

  • Trained hundreds of athletes in hitting, fielding, and game IQ development.

  • Focused on personalized player growth and long-term athletic success.

 

Entrepreneurship & Leadership:

CEO & Head Coach – Missouri Mariners Athletics (2020 – Present)

  • Founded and built a high-level baseball and softball development program.

  • Helped 30+ athletes secure college baseball and softball opportunities.

Founder & Director – Inner G Enterprise (2020 – Present)

  • Manages camps, coaching, recruitment services, and brand merchandising.

  • Hosts 200+ private coaching sessions per year, generating consistent revenue growth.

National Recording Artist (2020 – Present)

  • Released 33 songs with 800,000+ global streams.

  • Certified Gold Record for the hit single "Vibe" (500K+ streams).

  • Uses music to inspire and connect people through shared experiences.

 

Philosophy & Leadership:

"I’m not saying I’m gonna change the world, but I guarantee that I will spark the brain that will change the world."
– Tupac Shakur

⚡ Driven by passion. Built on purpose. Focused on impact.

Tyler King

💪 Certified Strength & Conditioning Coach | NASM Certified – Since 2015

🏋️‍♂️ Co-Founder | Missouri Mariners Athletics (2020-Present)
🔹 Director of Strength & Conditioning – Designing high-performance training programs tailored to baseball and softball athletes, focusing on speed, power, agility, and injury prevention.
🔹 College Recruiting Success (2020, 2024) – Helped 40+ athletes earn scholarships to NCAA, NJCAA, and NAIA schools through elite-level training and recruitment guidance.

⚾ College Baseball Coach | East Central College
🔹 Pitching Coach (11 Years Experience) – Specializing in velocity development, biomechanics, and injury prevention for pitchers.

🏋️‍♂️ Founder | Tyler King Fitness, LLC. (2015-Present)
🔹 Specializing in baseball & softball-specific training, mobility work, and advanced strength & conditioning techniques to optimize athlete performance.
🔹 Proven track record of enhancing speed, power, and agility for elite athletes, preparing them for collegiate and professional opportunities.

⚾ Coaching & Training Experience:
🔹 St. Louis Bandits Coach (2015-2018) – Developed elite baseball players with a focus on strength, speed, and agility training.
🔹 Tribe Baseball Strength & Conditioning Coach (2018-2020) – Implemented cutting-edge performance programs to prepare athletes for the highest levels of competition.

Tyler’s Journey & Mission

Tyler King began his coaching career in 2014 as an independent coach and trainer, fueled by a passion for developing young athletes into top-tier competitors. A former football and baseball player, Tyler attended Vermilion College in Minnesota, where he deepened his understanding of sports performance training.

He believes sports are one of the most powerful tools to shape young athletes into disciplined, hard-working individuals. His ultimate ambition? To own a state-of-the-art gym where elite athletes can train year-round, preparing for collegiate and professional success.

Alongside his childhood friend Gerrion, Tyler is determined to build the best youth sports dynamic St. Charles has ever seen, providing opportunities for young athletes to excel through Missouri Mariners Athletics.

 

Leadership & Training Philosophy

“Your ego cannot outgrow your gratitude. Your ‘why’ has to be bigger than your goals.”

“Leadership and learning are indispensable to each other.” – John F. Kennedy

CONTACT

Questions‭? ‬Feel free to reach out to the Missouri Mariners‬

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