🧵Fix the Dodgers Bullpen? ✅. A breakdown of one of the best RHH neutralizers in baseball; with elite movement, deceptive tunneling, and Stuff+ to match. 👇🏼. 1/.RHH? No Shot. Brock Stewart dominates right-handed hitters with a unique three-pitch mix:.🔴 Fastball (49%).🟠

7/.Conclusion:. Don’t change what makes Stewart dominant, just sharpen the edge. Stewart will be a difference-maker for the Dodgers' bullpen in October. If the Dodgers want to stabilize their RHP usage in high-leverage spots, Brock Stewart is the guy. He’s analytically sound,.

6/.The Timing is Right. With Blake Treinen just off the IL and Evan Phillips still unavailable, the Dodgers bullpen remains unstable. Stewart offers a high-leverage ready arm with:.Elite pitch characteristics.Strong RHH splits.Natural Stuff+ driven arsenal.

5/.FB-SNK Location Strategy 🔥. Not the biggest issue given his success, but something that could get him better results on BABIP:.📍 FB location: upper half/third.📍 SNK location: lower half/third. Currently, they bleed into opposite zones. A cleaner vertical separation would

4/.Dodgers Bullpen vs RHH in 2025:. ⚠️ 24th in wOBA allowed (.320).⚠️ 23rd in FIP (4.15).⚠️ 22nd in SLG (.413). They’ve struggled to suppress power and control contact against RHH. Stewart directly addresses this gap.

3/.60-Minute Deviation = Chaos 🕘. His Sinker and Sweeper mirror each other in shape using Seam-Shifted Wake:.Sinker: 10” of horizontal separation off Fastball with 15” of run.Sweeper: 16" sweep at 85 MPH, 150+ Stuff+ . This mirrored movement creates a 60-minute deviation, the

2/.Supination + Slot = Nightmare Fuel ⛽️. Stewart is a natural supinator, which shows up in how he:.Cuts his FB ~74% of the time.Releases from a lower slot.Produces 110+ Stuff+ on his FB.Achieves a flat VAA. This is how you blow up RHH at the top of the zone.

7/.At 9 years old, Jackson doesn’t need to be “perfect.”.He needs to move well, build awareness, and adapt. This is what skill transfer looks like in youth dev; constraints, rhythm, and freedom to explore. #PlayerDevelopment #BaseballTwitter #MotorLearning.

6/.💡 Coaching Nugget.Be very careful with verbal cues. Internal thinking slows movement. 🟦 External cues/constraints (blue plyo) or movement goals (“walk it off”) allow athletes to solve problems on their own. Internal cues/thoughts can slow the athlete down. Let the constraint.

5/.🛠️ Plyo Work - Transferring to the Slope.We took our plyo drills to the mound to get slope feel pre-pen. Jackson nearly hit a PR (54.9 mph). It’s about blending drill work into environments that feel game-like. #SkillTransfer #ThrowingDevelopment

4/.💥 Rapid Fire Throws — AA + Tempo.Short, quick, athletic throws. • Forces fast arm cycles.• Builds sequencing.• Trains his body to move quick. This directly supports the movement demands of throwing at game speed. #ArmAction #YouthDevelopment

3/.🔥 “The Joe Burrow” Drill.Named after his favorite QB. He gets rhythm, fluidity, and athleticism — things big kids often struggle to find. His challenge: staying stuck on the backside. ✅ Letting him “walk it off” post-throw encourages a front-side finish & natural

2/.🎯 Rotation Patterns + Glove Side Awareness.We’re using a Half-Kneeling MB Throw to isolate rotation and clean up posture. 🔵 Added a blue plyo on his glove side to cue connection — a constraint that builds awareness without over-coaching. #MotorLearning #ConstraintsLed

1/.Meet Jackson Burke, a 9 y/o on @CombineBase’s newest 10u travel team. Big frame. #PlayerDev #YouthBaseball. 🧵 A thread on skill transfer & movement training 👇🏼.

RT @daviddobson30: 🧵 Quinn Priester quietly made one of the best LHH pitch-mix adjustments in MLB this season. 💻 I built my first R-based….

RT @MurrayCollin: Let’s goooo @daviddobson30.

This is just the beginning. Huge thanks to @MurrayCollin for teaching me R & guiding me through how to apply it in baseball. 🔍 Looking to grow, contribute, and keep learning. ✉️ My DMs are open!.

Here’s a sneak peek of the visual tools I’m building in R using ggplot2, dplyr, and Shiny. 📈 Pitch usage tables.🎯 Strike zones.🧲 Movement profiles.🌡️ Heat maps.💻 Velocity charts. Can’t wait to post more of these soon and incorporate this into our program at @CombineBase!

📊 Overall Results:. Before (May 1–31):.•4.98 FIP.•6.2% K-BB. After (June–July):.•2.95 FIP.•21.1% K-BB. vs LHH Before. •6.02 FIP.•3.4% K-BB. vs LHH After:. •1.06 FIP.•28.7% K-BB. The Brewers helped him unlock his arsenal. I tracked it all using custom R tools I built.

The shift in pitch usage let him:. ✅ Attack LHH more effectively.✅ Set up his best breaking stuff.✅ Reduce overreliance on the Sinker. This is what modern pitch design looks like. Not just holding an iPad and tagging pitches while mic’d up.