Driveline Baseball Pitching Trainer @drivelineBB
Kent, WA
Joined March 2025
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Rollin Payton Tyler retweeted
10/6/26 Bullpen
FB: 90-91
Sinker: 89-90
Change: 82-83
Sweep: 75-76
@Yaks_Baseball @PTPitching @CoachKrueg @Coach_Panch @jfripp14 @CoachSalsa @PNW_Uncommitted
Rollin Payton Tyler retweeted
9/30/26 bullpen
FB: 89-91
Sinker: 88-89
Change: 80-81
Sweep: 75-76
@Yaks_Baseball @PTPitching @CoachKrueg @Coach_Panch @jfripp14 @CoachSalsa @PNW_Uncommitted
Rollin Payton Tyler retweeted
The Marlins are running one of the most interesting side quests in baseball right now
Their best starters are also their highest-leverage relievers?
Let's talk about it 🧵
Rollin Payton Tyler retweeted
Gone are the days of "getting a MoCap" and being ahead of the curve
Whether its through a facility in a bullpen or using in-game data, the edge is no longer having Motion Capture data - its how you use it
🧵
Rollin Payton Tyler retweeted
Former Dodgers prospect Gabe Emmett has gained almost 7 mph in 3 months.
How did he go from 88 to 94.9 in such a small window?🧐
Rollin Payton Tyler retweeted
More here on some of the work Janson put in to get here, with some quotes from the man himself, in this cool piece by @Travis_Sawchik:
drivelinebaseball.com/blogs/…
Rollin Payton Tyler retweeted
Before this season, Janson Junk had thrown 947 fourseam fastballs in his big league career.
13 of them were 96.0+
0 of them were 97.0+
Last night he threw 31 FF.
12 were 96+
3 were 97 🔥
Rollin Payton Tyler retweeted
First time on the @DrivelineBB YT in nearly 2 years here! @connerpelletier and I present our Saberseminar bat path biomech analysis we made to help our in-gym and remote athletes.
Watch ⬇️
youtube.com/watch?v=7j00kQje…
Rollin Payton Tyler retweeted
Understanding why certain pitches move the way they do is the first step towards efficient pitch design
Pitch movement is derived from both Magnus (Spin-Based) and Non-Magnus movement ⚖️
What’s the difference? How do they work?
1/🧵
Rollin Payton Tyler retweeted
Sunday Side Sessions: Starter v. Reliever Workload
By better understanding the demands of the season, we can better prepare pitchers in the offseason
Rollin Payton Tyler retweeted
Then we filled the gaps.
Added a sinker that's shown -20+ inches of run and a cutter that rides up to 13+ IVB while living within 2 inches of the y-axis.
Now he has something to run at both sides of the plate and can sequence righties and lefties without repeating a look.
Rollin Payton Tyler retweeted
There are few jobs that allow you to turn any idea into reality. Driveline will always be the land for new ideas
Latest idea - CV Ball Tracking to measure command, not only in bullpens but on every throw. #bigstrikes #noballs
S/O @Stevie_T12 for the seeds!
Rollin Payton Tyler retweeted
🔫COD Gun (Bat) Game🔫
5 rounds of 8
Top 8th EV ➡️ Next Bat
Clear the gauntlet, get @ShorelineECS gift card
GGs Greyson, Roy, Carter, and Kirsh!
Rollin Payton Tyler retweeted
@ShaneJohnson_1 LHP, sophomore at Oregon, walked into Driveline in June throwing from two arm slots.
He's leaving with one release, a 7-pitch mix, and a fastball that already grades MLB average at 89-92 because of where it comes from. Here's the summer.
Rollin Payton Tyler retweeted
Fall ball is where arms get cooked.
Classes, weights, bullpens, catch play, live ABs, all stacked with no plan, no tracking. By mid-October everyone's got dead arm, and nobody saw the spike coming.
PULSE sees it. Worn below the elbow, it turns every throw into a workload number, so the spike shows up on a screen while there's still time to fix it.
Rollin Payton Tyler retweeted
Some experimental work in Driveline R&D going on this week.
Lot of huge Launchpad improvements on the horizon with big implications for pro off-season training...
Rollin Payton Tyler retweeted
The game keeps evolving. Another good example on why rule changes need to be conservative - hitters are getting a lot better and adapting to pitching.
Rollin Payton Tyler retweeted
Ripping a ton of differential donor sport work for the first part of my on-ramp.
I haven’t thrown in about a year. It would be a terrible idea for me to go straight into throwing a baseball because
1) My elbow would explode
2) The attractor states I funnel into are disadvantageous to throwing hard and accurate.
These have similar enough attractor states to throwing a baseball to improve tissue capacity in the shoulder and elbow complex.
They are also increasing my attunement to the affordance landscape, giving me more potential solutions to work with when I get back to throwing the baseball.
