Winter Development Series · Ages 7–10
Learn from former professional baseball players who know what it takes to compete at the highest levels. Real instruction. Real repetitions. Real development.
First-round MLB Draft experience. Professional baseball coaching. Built for young athletes.
Jeff Allison
First-Round MLB Draft Pick | Florida Marlins
Ryan Moorer
Former Professional Pitcher | Seattle Mariners Organization
The coaches
There's a difference between knowing how to play baseball and knowing how to develop a young ballplayer. Our coaches bring professional experience, proven fundamentals, and a genuine passion for helping kids improve.
First-Round MLB Draft Pick | Florida Marlins
Co-Founder | Director of Player Development
Jeff was drafted in the first round out of a Massachusetts high school. He knows the habits, preparation, and fundamentals that separate good players — and he breaks them down in a way young athletes can actually use.
Former Professional Pitcher | Seattle Mariners Organization
Baseball Development Coach
Ryan pitched professionally and understands how a healthy, repeatable throwing motion is built. He helps kids learn sound mechanics early, so good habits come naturally as they grow.
Founding Winter Development Series
Four focused sessions built around the skills young athletes need most. More ground balls. More quality swings. Better throwing mechanics. Smarter decisions. And coaching that helps every player understand how to improve.
4 Weeks
Structured Development
10 Hours
Planned On-Field Instruction
Tentative — 4 × 2.5-hour sessions
Small Groups
Individual Coaching Attention
Real Feedback
A Clear Path to Improvement
Program Details
Reservations OpenA typical session
Young players improve through repetition, encouragement, and great instruction. Every session is designed to keep athletes moving, learning, and competing.
00:00–00:15
Dynamic Warmup & Athletic Movement
00:15–01:00
Skill Development Stations
01:00–01:45
Hitting & Defensive Repetitions
01:45–02:15
Game Situations & Competition
02:15–02:30
Marlins Moment & Takeaways
Example schedule — subject to final curriculum.
The curriculum
Throwing, Fielding & Athletic Movement
Character principle
Preparation
Hitting Fundamentals & Approach
Character principle
Confidence
Pitching, Catching & Baseball IQ
Character principle
Composure
Situational Baseball & Player Development
Character principle
Resilience
Every week includes a balanced mix of throwing, fielding, hitting, and athletic development. Themes show the primary focus — not the only activities.
Why parents choose Mass Marlins
Every athlete develops differently. Our job is to meet them where they are, challenge them appropriately, and help them leave more confident than they arrived.
Proper techniques built through quality repetitions.
Players learn what they're doing well and how to improve.
Understanding situations, making decisions, and playing with purpose.
Effort, resilience, accountability, and being a great teammate.
An editorial feature · End of every session
The lessons that last longer than the game.
At the end of each session, athletes may hear from accomplished players, coaches, and other leaders about perseverance, preparation, failure, confidence, and success.
Potential guests may include professional and former professional players, college athletes, coaches, and community leaders. Guest appearances are not guaranteed and are announced by name only once confirmed.
Guest announcements coming soon
Community
We want to recognize the kid who encourages a teammate just as much as the kid who hits the ball the farthest.
FAQ
