Most baseball players train hard all offseason—then slowly lose strength, power, and durability once the season begins.
Not because they’re lazy. Not because they don’t want to keep pushing.
Because in-season training is often misunderstood—or ignored completely.
Lifts disappear. Bodies start feeling beat up. Velocity, power, and explosiveness slowly decline.
At Tri Star Strength x Rehab, we see the same pattern every year with baseball athletes across the Tri-Cities and beyond.
External rotation strength—the brakes that protect the shoulder—drops early in the season. Jump performance dips as the nervous system loses exposure to high outputs. Strength numbers fall simply because athletes stop getting meaningful strength work once games start.
It’s not a motivation problem. It’s a system problem.
That’s why we built the Tri Star IN//SZN Protocol, a remote in-season baseball training program designed to help athletes maintain strength, power, speed, and arm durability throughout the season.
Built by a Clinical Baseball Specialist, Doctor of Physical Therapy, and performance coaches, this program blends sports performance training, personal training structure, and physical therapy principles to keep athletes healthy and explosive from opening day through playoffs.
Because the goal of in-season training isn’t just surviving the season.
It’s performing at your best all the way through it.
A1
The World's Greatest Stretch
1 x 7
A2
Cat Cows
1 x 7
A3
Child's Pose x Thread Needle
1 x 7
A4
Bird Dogs
1 x 7
A5
Serratus Wall Slides
1 x 7
A
Full Body Activation | Primer
2 x 5
B
Walking Lunge with Rotations
2 x 10
C
Hamstring Scoops
2 x 10
D
Switching Drill - A Skip
2 x 10
E
Power Skips
2 x 4
F
Banded Monster Walks
2 x 6
G
Linear Mini Band Walks
2 x 6
A
Seated Arm Swings
3 x 0:10
B
Lateral Shuffle to Sprint
3 x 20
C1
4 Finger ISO Deadhang
2 x 0:45
C2
Seated DB ER on Bench
2 x 6
C3
DB Reverse Curl - Standing
2 x 15
C4
Banded Split Stance Speed OH Tri's
2 x 15
D1
HK Cable Rotations | HEAVY
2 x 5
D2
Split Stance TRX Pallof Press to Lateral Fallout + Rotation
2 x 5
A
90/90 Shinbox
2 x 5
B
Copenhagen Hip Drops
2 x 5
C
SL Long Lever Hamstring Switches w/ ISO Hold
2 x 8
D
Bench Hip Flexor ISO
2 x 0:45
A
Broad Jumps
3 x 3
B1
TB Deadlift
3 x 5 @ 0.7
B2
HK SA Landmine OH Press
3 x 8
C1
Band or Cable Row (ISO Abs)
3 x 5
C2
Banded Monster Walks
3 x 10
D1
Pullups
3 x 5
D2
Banded Pushup
3 x 6
D3
Banded Lateral Broad Jump
3 x 3
E1
Suitcase Walk
2 x 20
E2
Swiss Ball Hamstring Curl
2 x 12
A1
The World's Greatest Stretch
1 x 7
A2
Child's Pose x Thread Needle
1 x 7
A3
Cat Cows
1 x 7
A4
Bird Dogs
1 x 7
A5
Serratus Wall Slides
1 x 7
A1
Full Body Activation | Primer
1 x 5
A2
Deep Tier Plyo Lunge
1 x 25
A3
POGOs
1 x 10
A4
Double Heiden to Stick
1 x 3
A5
Wall Switches
1 x 10
A6
Banded Monster Walks
1 x 6
A7
Linear Mini Band Walks
1 x 6
B
S Run
3 x 30
A1
Full Body Activation | Primer
2 x 5
A2
Switching Drill - A Skip
2 x 10
A3
Deep Tier Plyo Lunge
2 x 20
B
Tempo Run
1 x 20:00
C1
4 Finger ISO Deadhang
2 x 0:30
C2
Waiter Walks
2 x 20
C3
Seated DB ER on Bench
2 x 5
C4
DB or Plate IR Pickups
2 x 5
D1
Plate or KB Pronation ISO
2 x 2 @ 0:30
D2
Banded Ulnar Deviation
2 x 2 @ 0:30
D3
Baseball Bat Supinations
2 x 10
Josh Davis PT, DPT, CSCS
Doctor of Physical Therapy, Certified Strength & Conditioning Specialist, Champion Clinical Baseball Specialist, Former Baseball Player
Colby Backus CSCS
Certified Strength & Conditioning Specialist, BS Kinesiology, Former University Of Tennessee x Walters State JUCO Outfielder
Train IN-SEASON with Intent. Specificity. Intensity.
Start My 7-Day Free Trial
Cam Hayworth
Virginia Tech Commit LHP/1B
Verified Athlete"Since training with Tri Star, I’ve gained muscle, become more explosive, and increased my pitching velocity without pain. Full-body training has taken stress off my arm, and the testing metrics help identify imbalances so workouts are built exactly around what I need."
Ethan Roller
Regent University 3B
Verified Athlete"I came to Tri Star after a labrum tear with pain, weakness, and no mobility. Now I’m pain-free, stronger than ever, and my exit velo went from 92 to 104. The force plate testing shows exactly where I need to improve, and the workouts are built specifically for me and my sport."
Colton Masters
Crockett HS 2B/SS/RHP
Verified Athlete"I started at 125 lbs and now I’m 161 while getting faster and stronger. My exit velo is up to 92 and I’m throwing 79 mph with a healthy arm. The data tracking shows my weak spots and helps build workouts that improve exactly what I need for my game."
Liam Skeen
Union HS SS/RHP
Verified Athlete"I used to have poor body control and felt like I had to throw with everything I had just to hit 90 mph. Now my mechanics are clean, my body is under control, and I can cruise at 90+ with better command. I feel stronger, more powerful, and my recovery is way better. My body can now handle the output."
When you join a team you’re getting more than programming, you’re joining an online community.
IN//SZN Protocol
IN//SZN Protocol
IN//SZN Protocol