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ATP, Advanced Therapy and Performance
Clark Gilmore pitching for the Indianapolis Clowns

Pitcher · Indianapolis Clowns, Banana Ball Championship League

Clark Gilmore

Play Division I baseball as an undersized high schooler. Then keep playing, on his own terms.

Outcome

155 to 220 lb and 80 to 93 mph. Joel Barlow High School to Dartmouth, Notre Dame, and the Indianapolis Clowns.

Fastball
80to93mph
Bodyweight
155to220lb
First six months
155 lb, 80 mphto190 lb, 87 mph

Where it started.

A 155 lb junior at Joel Barlow with an 80 mph fastball, a Division I dream, and a habit of catching comebackers behind his back that started at age 12.

What they wanted

A body that could carry a Division I arm, and a program he could keep coming back to.

What ATP saw.

ATP evaluated 3 of the seven domains for this case. The lit circles are where the history sent us. Tap any circle to see what ATP looks at there.

Working diagnosis

Capacity first. The frame had to arrive before the arm could show what it had, and it did: 35 lb and 7 mph in the first six months. After that the job was to keep building through five college offseasons without losing the delivery, or the fun.

Clark Gilmore pitching for the Indianapolis Clowns

Capacity · Skill · RecoveryTap a circle to see what ATP looks at there.

In order.

What came first, and what came after.

  1. Priority 1: Bodyweight and strength: 155 to 190 lb in six months

  2. Priority 2: Velocity following the frame: 80 to 87, then 93

  3. Priority 3: Offseason blocks at ATP through Dartmouth, every winter

What we did.

The tools follow the diagnosis. Every item here was chosen after the priorities were set.

WFSB: Banana Ball in Hartford, Indianapolis Clowns pitcher Clark Gilmore (July 2026)

Interventions

  • Semi-private strength and bodyweight program, junior and senior year at Joel Barlow
  • Offseason training blocks every college winter
  • Movement and orthopedic screens along the way

What changed.

High school to professional Banana Ball, 2018 to 2026

  • 01155 to 190 lb and 80 to 87 mph in six months, then a commitment to Dartmouth
  • 02Career highs of 220 lb and 93 mph
  • 033-0 with a 0.69 ERA, 29 strikeouts in 26 innings, for Norwich in the Futures Collegiate Baseball League, summer 2023
  • 04A complete game against Brown and an ESPN SportsCenter Top 10 for back-to-back behind-the-back snags, 2023
  • 05Dartmouth degree, May 2024. A graduate season at Notre Dame in the ACC while earning a master's in business management at Mendoza, 2025
  • 06Last pick of the first Banana Ball Championship League draft, November 2025, after a one-minute application video and a Savannah tryout
  • 07The behind-the-back changeup: a called third strike on Hartford's Jackson Olson on May 12, 2026 that went viral. Two strikeouts, two ground balls and a double play with it by July

On the record

  1. 2018-07Waterbury Overlook Blacksox, runner-up at the Mickey Mantle World Series3-1, 0.94 ERA, 34 strikeouts in 28 innings (self-reported)NCSA recruiting profile
  2. 2018-09Starting point, junior year at Joel Barlow155 lb, 80 mphHis ATP-published account
  3. 2019-03Six months in190 lb, 87 mphHis ATP-published account
  4. 2019Committed to DartmouthHis ATP-published account
  5. 2020Joel Barlow High School, class of 2020recruiting profile listed 6-4, 200 lb, 85 mph top fastballNCSA recruiting profile
  6. 2021Dartmouth freshman year; Ivy League season not playedThe Dartmouth, April 2026
  7. 2022Dartmouth debutNotre Dame Athletics bio
  8. 2023Dartmouth: complete game against Brown; ESPN SportsCenter Top 10 for consecutive behind-the-back snags12 games, 6 starts, 40 innings; 1.96 ERA over an 18.1-inning stretchNotre Dame Athletics bio; Baseball-Reference
  9. 2023-07Norwich, Futures Collegiate Baseball League3-0, 0.69 ERA, 26 innings, 29 strikeoutsBaseball-Reference
  10. 2024Senior season at Dartmouth12 games, 6 starts, 23.2 innings, 16 strikeoutsNotre Dame Athletics bio
  11. 2024-05Graduated from DartmouthThe Dartmouth, April 2026
  12. 2025Graduate season at Notre Dame; master's in business management, Mendoza College of BusinessNotre Dame Athletics; The Dartmouth
  13. 2025-11One-minute application video, Savannah tryout, and the last pick of the first Banana Ball Championship League draft, by the Indianapolis ClownsThe Dartmouth; Hartford Courant via Yahoo Sports
  14. 2026-05-12Behind-the-back changeup, called third strike on Hartford's Jackson OlsonHartford Courant via Yahoo Sports
  15. 2026-07-23Banana Ball at Dunkin' Park, Hartford, July 23 to 25Hartford Courant via Yahoo Sports; WFSB

Now.

Pitcher for the Indianapolis Clowns in the Banana Ball Championship League, with more than 100,000 followers across social media. Pitched in front of a home crowd at Dunkin' Park in Hartford, July 23 to 25, 2026.

“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 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
Reviewing findings together at ATP

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