Meet the team

Student-Athlete | Youth Baseball Coach
Pitcher • Catcher • Utility Player

Aaron Hernandez is a dedicated 11th-grade student-athlete and versatile baseball player with a primary focus as a pitcher and catcher. His journey began in Little League, where he developed a passion for the game and steadily grew into a well-rounded, high-level competitor. Known for his strong fundamentals, understanding of pitching mechanics, and game strategy, Aaron continues to refine his skills and elevate his performance. One of his proudest moments to date is hitting his first home run—a milestone in his growth as a player—and he recently celebrated hitting his second home run this year 2025. 

In addition to his playing career, Aaron is also a committed youth baseball coach, affectionately known as Coach “A” by his players. He works with children ages 4–10, emphasizing fundamentals, proper technique, and building a love for the game. His coaching approach focuses on developing young athletes’ confidence and creating a strong foundation for their future in baseball.

Achievements:

Offensive Player of the Year (2024–2025) – Rialto School District
Honored for leading in key offensive categories and delivering in high-pressure situations.

Athlete of the Year (2022–2023) – San Bernardino School District
One of only three students recognized district-wide for outstanding athletic performance and leadership.

School Achievement (2019):
First student from his school to finish a 5K race, winning $500 for his school and showcasing his dedication to athletic and community excellence.

Softball Instructor | Pitching Specialist
Collegiate Athlete – CSUSB Softball

Brooklyn Blackmon is a fourth-year collegiate softball pitcher at California State University, San Bernardino (CSUSB), with over 13 years of playing experience. During her collegiate career, she has thrown over 200 innings, recorded 119 strikeouts, and maintains a career ERA of 3.73.

Brooklyn was named to the 2022 All-Tournament Team and played a key role in CSUSB's 2023 NCAA Regional appearance. Known for her competitive spirit and strong pitching presence, she brings both experience and passion to every part of the game.

Beyond her on-field accomplishments, Brooklyn is committed to giving back to the softball community. She is excited to mentor and inspire the next generation of players by sharing her knowledge, experiences, and love for the sport.

Baseball Travel Ball Program Director- Diamond Club Athletics | Baseball Instructor

Charlie is a veteran baseball instructor with over 30 years of coaching experience across all competitive levels, including Little League, PONY, high school, and elite academy baseball. Throughout his career, he has trained more than 4,000 athletes, emphasizing fundamentals, advanced skill development, and a strong understanding of the game.

His coaching accomplishments include championship wins at major tournaments, a gold medal at the 2015 AAU Junior Olympics, and leading the 2013 Vineyard Little League team to the Western Regional Finals on ESPN—just one game shy of the Little League World Series in Williamsport, PA.

Coach Charlie has helped guide numerous athletes into high school, college, and professional baseball, including hundreds who have advanced to collegiate and Major League levels.

He currently provides instruction to youth, high school, and college players, while also serving as the Baseball Travel Ball Director at Diamond Club Athletics. Coach Charlie is committed to not only building great ball players but also helping shape responsible, confident young adults through the game of baseball.

Collegiate Pitcher | Baseball Instructor
California State University, San Bernardino (CSUSB)

Dylan is a collegiate starting pitcher originally from Tacoma, Washington. He began his college baseball career at Bellevue College, where he played for two years before transferring to California State University, San Bernardino. In his first year at CSUSB, Dylan helped lead the team to the NCAA Division II College World Series.

With three years of experience as a college starter, Dylan brings competitive game experience, mound presence, and leadership to every outing. He is currently entering his final year of collegiate eligibility and is focused on making the most of his senior season both on and off the field.

Director of Operations | Softball Travel Ball Program Director

George Tellez’s passion for sports began in his youth, playing Pop Warner football and later competing in adult softball for over a decade. In 2017, his journey in youth sports took a meaningful turn when he began coaching his daughter’s softball team. That experience sparked a deeper commitment to athlete development and led to his role as President of the Montclair Golden Girls Softball League, where he focused on building confident, well-rounded athletes both on and off the field.

In December 2024, George joined Diamond Club Athletics as Director of Softball Travel Ball Program, where he now oversees a growing travel ball program serving athletes from 8U to 18U. Under his leadership, Diamond Club has also launched a Strength, Conditioning, and Agility Summer Program—a key step toward building a full-scale athlete development academy.

George is passionate about mentoring driven athletes and is dedicated to shaping the next generation of competitors through structure, discipline, and a love for the game.goes here

Collegiate Outfielder | Baseball Instructor
California State University, San Bernardino (CSUSB)

Jeremy Giesegh is a third-year collegiate outfielder at California State University, San Bernardino. With 16 years of baseball experience, Jeremy brings a wealth of knowledge and skill to the field, highlighted by his impressive .351 batting average in a previous college season.

He has competed at the NCAA College World Series and gained valuable exposure through MLB Network. Jeremy is passionate about sharing his expertise and is eager to mentor and develop aspiring athletes by passing down the knowledge he has gained throughout his baseball journey.

J.R. – NASM Certified Athletic Performance Specialist
Specializing in Catching, Hitting, Mobility & Athletic Performance

Originally from Upland, California, J.R. has always been passionate about sports, travel, and the outdoors. After years of struggling with his weight and turning to short-term solutions, he discovered that consistent exercise and proper nutrition were the keys to long-term wellness. This lifestyle transformation became his foundation—not just for personal growth, but for helping others do the same.

As a NASM Certified Athletic Performance Specialist, J.R. now uses his experience and knowledge to train athletes of all levels. His specialties include:

Catching development (mechanics, mobility, and game awareness)

Hitting instruction (technique, timing, and approach)

Athletic performance (speed, agility, and strength)

Mobility training (injury prevention, movement quality, and recovery)

J.R. is committed to building strong, confident athletes through structured, goal-driven training while also promoting a healthy, sustainable lifestyle both on and off the field.