Matt Holliday

OUR INSTRUCTORS

503 Baseball Baseball and Softball Academy has a team of dedicated coaches for each squad, qualified for numerous finals. They have a proven track record of success in teaching and training players.
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MAIN COACHJOHN DOE

Capitalize on low hanging fruit to identify a ballpark value added activity to beta test override the digital divide.

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SENIOR TRAINERMARIO JOHNSON

Additional clickthroughs from DevOps. Nanotechnology immersion along the information highway.

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JUNIOR TRAINERMARK SMITH

Bring to the table win-win survival strategies to ensure proactive domination. generated content in time.

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FITNESS INSTRUCTORTOM LEE

User generated content in real-time will have multiple touchpoints for offshoring close the loop on focusing.

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GEHRIG RICHINS

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TIM DRISCOLL

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DAROLD ELLISON

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MATT MCDONALD

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KARI
BALTZ

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TIM
PETKE

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COACH ASSISTENTSAM ROBERTS

Foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view.

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SECOND COACHHANK MELANSON

Override the digital divide with additional clickthroughs from DevOps. Nanotechnology immersion.

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MANAGERDAVID DA COSTA

Outside of baseball David was a successful GAA Minor, winning 3 County Armagh Gaelic Championships.

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CEOPETER FLAGG

Peter moved from Greece last year. He is a Sport Science graduate from the National University of Athens.

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MATT
HOLLIDAY

INSTRUCTOR - Hitting

Let me introduce myself:

Early Career & Collegiate Success
I was a four-year starter at Lawrence University, where I established myself as one of the conference’s premier players. Each season I earned All-Conference honors, and in 2018 my bat and glove combined to land me Third Team All-Region recognition. I posted a career slash line of .312/.405/.485 and helped lead Lawrence to multiple postseason berths.

International Competition
After college, I earned a spot on the Hong Kong National Team. I represented Hong Kong at the 2018 Asian Games in Jakarta and again at the 2019 Asian Baseball Championship. Facing some of Asia’s best talent deepened my understanding of the game’s global strategies and exposed me to a wide range of coaching philosophies.

Summer League Standout
Over three summers in the highly competitive Mavericks League, I split time between the Portland Mavericks (Year 1) and the Volcanoes (Years 2–3). I adjusted quickly to wood-bat play and showcased gap-to-gap power, earning three Silver Slugger awards. In 2023 I was voted League MVP—in recognition not only of my .298/.412/.537 production but also my leadership in the clubhouse.

Coaching Foundations in Miami
Following my playing career, I transitioned to instruction at Gradum Baseball in Miami (2019–2020). As a hitting instructor I worked one-on-one with athletes of all ages, developing swing-path drills, conducting video-analysis sessions, and leading mental-approach workshops. That experience shaped my patient, detail-oriented coaching style.

Leadership at 503 Baseball
Since joining 503 Baseball in Milwaukie, OR (2021–present), I’ve brought together my high-level playing experience and instructional expertise. Whether I’m running small-group hitting clinics, designing year-round development plans, or mentoring travel-team players, my goal remains the same: to help each athlete unlock their full potential—both on the field and off.