Quincy Steidle (@qsteidle) / X

Quincy Steidle

99 posts

Quincy Steidle

@qsteidle

@RedSox Baseball Sciences | NU MIE ‘26

Boston, MA

Joined August 2024

Quincy Steidle
@qsteidle
Nov 29, 2024
Nick Madrigal, #4 overall pick in 2018, was non-tendered by the Cubs after slashing .221/.275/.261 with a .536 OPS in 2024. His batted ball metrics tell the story (MLB average⚾): Bat Speed: 65.5 mph (⚾71.5) 90th % EV: 99 mph (⚾104) Max EV: 105.1 mph (⚾108.5) Adding 3 mph of
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Quincy Steidle
@qsteidle
Jan 9, 2025
I recently completed my dream internship as a hitting trainer at Driveline Baseball. During my time at Driveline, I learned countless lessons about the science and art of coaching. Here are the 5 most important ones: 🧵👇
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Quincy Steidle
@qsteidle
Oct 30, 2024
Want to crush baseballs?💥⚾️ The data is clear: Pulling the ball in the air = offensive success. Hitting oppo with authority matters, too, but nothing beats pull-side production.
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Quincy Steidle
@qsteidle
Nov 29, 2024
Replying to @qsteidle
The Problem: Madrigal’s quad-dominant load causes extreme drift in his forward move. At launch, he’s lost space, forcing his hands and hips to accelerate simultaneously. This creates a steep bat path, minimal power, and a short window for positive attack angles. This means
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Quincy Steidle
@qsteidle
Jan 9, 2025
Replying to @qsteidle
4. If you’re not failing, you’re not trying. - Playing it safe may limit embarrassment, but it eliminates growth. - Don't be afraid to step out of your comfort zone. Mistakes are opportunities to learn and improve.
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Quincy Steidle
@qsteidle
Nov 29, 2024
Replying to @qsteidle
The Solution: Adjust his bat path to stay on plane longer. This increases his margin for error, improves contact quality, and boosts bat speed. 1 mph bat speed = +1.2 mph EV = +7 ft on ideal LAs = ~$6M in FA value. The key? Hit the ball hard and keep it off the ground.
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Quincy Steidle
@qsteidle
Jan 9, 2025
Replying to @qsteidle
5. Never stop asking questions. - Curiosity fuels growth. - Asking questions helps you gain clarity, discover new perspectives, and improve constantly. Got questions about my experience as a trainer at Driveline? DMs are open!
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Quincy Steidle
@qsteidle
Jan 9, 2025
Replying to @qsteidle
2. They have to know you care before they care what you know. "It's the Jimmies and Joes, not the X's and O's." - Build genuine relationships with players (and coworkers). - Showing you care is the best way to build credibility and earn buy-in.
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Quincy Steidle
@qsteidle
Jan 9, 2025
Replying to @qsteidle
3. Intention shapes action. - Stay external whenever possible. - Design the environment to drive the adaptation you’re looking for.
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Quincy Steidle
@qsteidle
Jan 9, 2025
Replying to @qsteidle
1. Start from the ground up. - Figuratively: Use frameworks like the Hierarchy of Training Needs to guide athlete development. - Literally: Analyzing how an athlete uses their lower half to understand mechanical effects further up the kinetic chain.
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Quincy Steidle
@qsteidle
Oct 30, 2024
Replying to @qsteidle
Not convinced yet? Take a look at the game's elite hitters. (Hint: They pull the ball in the air.)
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Quincy Steidle
@qsteidle
Nov 29, 2024
Replying to @qsteidle
@LanceBroz
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Quincy Steidle
@qsteidle
Nov 29, 2024
Replying to @qsteidle
The Answer: Launch angle. Madrigal’s GB%: 60% (⚾ 42.7%) Avg LA: 2.5° (⚾ 13°) Pull-Side LA: -7.4° 🚩 Kwan’s Avg LA? 14.5°. Batted balls at 14-15° hit .770. At Madrigal’s LA? .181.
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Quincy Steidle
@qsteidle
Oct 26, 2024
🧵 @brandon_marsh22's 2023 breakout (126 OPS+) with the Phillies reverted to a solid but unspectacular 2024 (109 OPS+). Breaking down his Driveline "Big 3" scouting grades shows room for growth: Bat Speed: 53 Bat to Ball: 49 Swing Decisions: 50 Let's dig in...
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