Velocity development and arm care for baseball players, in Stamford, CT or remote.
Throw harder. Stay healthy.
Velocity comes from the whole person: strength, mass, delivery, sleep, and an arm that tolerates full intent. ATP evaluates all of it and decides what comes first.
For pitchers and position players, youth to pro. Softball too.
Therapy, strength, throwing and mental performance from one evaluation. Youth to MLB.
Where are you right now?
Pick the one closest to where you are.
I want to throw harder.
Pitchers and position players, youth to pro.
Start here
I'm getting stronger but not throwing harder.
The weight room is working. The radar gun is not.
See how ATP handles it
My body hurts when I throw.
Elbow, shoulder, back, neck. Numb or tingling fingers, a dead arm. New or lingering.
See how ATP handles it
I'm coming back from surgery.
UCL, labrum, or any surgery with a throwing program on the other side.
See how ATP handles it
I'm trying to not have surgery.
UCL, labrum, elbow pain. Find what is driving it first.
Start here
I'm fine in the bullpen. Games are different.
Command, confidence, the first walk.
Start here
What ATP looks at for a thrower.
Four domains carry most velocity and arm-health stories. Capacity, the delivery, recovery, and the tissue that has to tolerate all three.
Same problem.
Different limitation.
Four pitchers sit at 84.
84 mph pitcher
What mattered
Findings
- Undersized for the level
- Strength training history under a year
We start with
Strength, Power & Physical Capacity
Mass, strength, and sleep before mechanics
Illustrative composite drawn from patterns ATP sees.
How it works for a pitcher.
Evaluate, decide, act, retest. Adapt feeds back into Evaluate.
Full-intent video and force testing. A bullpen at 70 percent hides the problem.
Arm care, throwing and strength are one plan, written by people who talk to each other every day.
Retest every block. If the ball is not moving, the plan changes.
Your questions go to the people who evaluated you and wrote the plan, on site or remote.
We measure what matters.
Four tools ATP uses with throwers, and what each one tells us.
TrackManVelocity, spin, movement and release metrics Decides Whether a mechanical or physical change is showing up where it counts: in the ball.
VALD force plates & dynamometryForce, asymmetry, jump and strength metrics Decides Whether strength is there, whether it is symmetrical, and whether it is being expressed as power.
Proteus3D power and rotational output Decides Whether rotational power matches the strength numbers, or whether force is getting lost before it reaches the skill.
Video analysisThrowing, hitting and movement mechanics frame by frame Decides Where in the sequence force is transferred well, and where it is leaking.
Pitchers, in their words.
74 to 99 mph and 60 lb of muscle in three years
“I personally struggled with putting on size early in my high school career. ATP put me on a personalized nutrition program and weightlifting program. In just 3 years I put on over 60 lbs of muscle and completely changed the trajectory of my baseball career.…” Read more
Since I joined ATP I added 25 MPH to my fastball (74 mph to 99 mph), landing me my dream commitment and turning me into a nationally ranked professional prospect. The trainers at ATP genuinely care about me as a player and as a person.”
Bryce Hill
Pitcher, Stanford University
155 to 190 lb and 80 to 87 mph in six months. Later 220 lb and 93 mph.
“I came to ATP as an undersized high schooler with dreams of playing Division I baseball. Within just six months, my work in the weight room led to a 35-pound increase in bodyweight (155 to 190 lbs) and a 7 mph jump in fastball velocity (80 to 87 mph). That…” Read more
improvement helped me commit to my dream school, Dartmouth College. During my offseasons at Dartmouth, I continued training with ATP, eventually reaching career highs of 220 lbs and 93 mph. Those gains opened the door to playing Power 4 baseball at the University of Notre Dame.”
Clark Gilmore
Dartmouth, then Notre Dame
159 to 190 lb. Exit velocity 89 to 105. 60-yard 7.2 to 6.8. Committed a year after joining.
“When I first came to ATP I was underweight, undersized, and lacked strength. ATP helped me gain strength, assist in the weight gain process, and boost all 90 mph formula, velocity, exit velo metrics, and mental strength. All of this contributed to my college…” Read more
commitment in September of 2024, just over 1 year after joining ATP.”
Nick DiMaso
High school, college commit
79 to 91 mph in a year. Now at the University of New Haven.
“Before I started at ATP, I was injured, had low confidence, and had a high ERA. ATP helped me get stronger not only physically, but mentally as well. My recovery time for my UCL strain only took a couple months. My velocity jumped from 79 to 91 in 1 year and…” Read more
my ERA dropped from upper 3 to 1.06.”
Chris Yannella
Left-handed pitcher, University of New Haven
Prepared for the big leagues, physically and mentally.
“ATP gave me the tools to succeed at the highest level. Their expertise in strength and mindset prepared me for the challenges of the big leagues, and their support pushed me to be my best not only as an athlete, but as a person as well.”
Kody Funderburk
Left-handed pitcher, Minnesota Twins
Topped at 67 in March 2025. Touched 81 within two months.
“I had been struggling on the mound and was not throwing as hard as I knew I was capable of after a change in movement due to a prior injury. I came to ATP to gain velocity and to train in a structured manner with coaching that was personal to me. I saw results…” Read more
within 2 months. I was able to correct poor movement patterns through doing drills every day and receiving feedback.”Jacob Britto
Pitcher, movement change after a prior injury
In their words, from ATP’s published results.
Some of the athletes we work with.
Josiah Gray
Pitcher, Washington Nationals. Trained at ATP through college and his early pro years: Le Moyne to the 2018 draft, the majors in 2021, the 2023 All-Star Game.
Jason Foley
Pitcher, San Francisco Giants.
Austin Pope
Pitcher. Major League debut with the Arizona Diamondbacks.
Joe Jacques
Pitcher, formerly Boston Red Sox and Arizona Diamondbacks.
Zack Short
Infielder, New York Mets organization. Big-league time in six straight seasons, 2021 through 2026.
Alex Santos
Right-handed pitcher, Houston Astros organization. Reached Triple-A in 2026.
Sammy Stafura
Shortstop, New York Mets organization.
Adam Stone
Pitcher, Chicago Cubs organization. Harvard.
Jake Walkinshaw
Pitcher, Miami Marlins organization. ATP since his college UCL rehab.
Clark Gilmore
Pitcher, Indianapolis Clowns, Banana Ball Championship League. Dartmouth and Notre Dame.
Bryce Hill
Pitcher, Stanford University.
Andrew Rogovic
Right-handed pitcher, Ole Miss.
Warner Gearhart
Left-handed pitcher, Oberlin College.
Andrew Castelluccio
Right-handed pitcher, Manhattan University. St. John's before that.
Chris Yannella
Left-handed pitcher, University of New Haven.
Andrew Wong
Right-handed pitcher, Fairfield Prep. Northwestern University commit.
Tyler Easterbrook
Right-handed pitcher, Deerfield Academy. Tufts University commit.
Nick DiMaso
High school infielder and outfielder, college commit.
Brady Cesaratto
Outfielder, Fairfield Prep.
Devin Montesano
Pitcher and outfielder, Darien High School. Army commit.
Jack Nolan
Third baseman and catcher, Fairfield Prep. Army commit.
Casey Meyer
Outfielder and first baseman, Wilton High School. Haverford College commit.
In Stamford, or wherever you throw.
Baseball development is fully remote-capable. The evaluation is best in person. The work can happen anywhere.
316 Courtland Ave, Suite 5, Stamford, CT 06906
On-site
Therapy, strength, throwing and mental performance under one roof, with TrackMan and force plates on the floor.
Where this discipline begins
Remote
Video analysis, a written throwing and strength program, and daily communication with a remote throwing coach who has your evaluation in front of them.
Hybrid
Some of your training in Stamford and the rest at home, on one plan, with retests on a schedule.
Questions people ask before they book.
Short answers. If yours is not here, talk with ATP and we will give you a straight one.
You spend the session with a clinician or coach. We take a detailed history, test across the domains your history points to, and use technology where it answers a real question. You leave with a working diagnosis, a priority order and a plan.
Yes, for baseball development, performance programming, and mental performance, on a remote or hybrid basis. Therapy generally begins on-site.
No. We work with professionals, and we work with 14-year-olds and 45-year-olds. What matters is that you want a clear answer about what is limiting you and a plan that is built around it.
Yes. Female athletes across youth, high school, college and adult levels train and rehab at ATP. The evaluation is built around the person in front of us.
Find what is between you and the next number.
Tell us where you are. We will show you where ATP would start.