Advertisement · 728 × 90

Posts by Joshua Rodrigues

Preview
The Next Adjustment in the Run Game Is Already Here Trends in this game don’t announce themselves they surface quietly, spread, and before long they’ve reshaped how everyone operates.

"With lead sizes continuing to grow and teams pushing to exploit the current rules, a defensive response was inevitable this is just the first version of it"

jrod20033.substack.com/p/the-next-a...

1 day ago 3 2 1 0
E12 - Aaron Boone Ejected After Ryan Additon's Balk Call Was Technically Correct, but also ugh
E12 - Aaron Boone Ejected After Ryan Additon's Balk Call Was Technically Correct, but also ugh YouTube video by CloseCallSports

I think it's just misunderstanding between what has always been called and what is technically legal.

Good breakdown here

youtu.be/O1coWFDrBgo?...

1 day ago 1 0 0 0
Preview
The Next Adjustment in the Run Game Is Already Here Trends in this game don’t announce themselves they surface quietly, spread, and before long they’ve reshaped how everyone operates.

"With lead sizes continuing to grow and teams pushing to exploit the current rules, a defensive response was inevitable this is just the first version of it"

jrod20033.substack.com/p/the-next-a...

1 day ago 3 2 1 0

Well done here

2 days ago 1 0 1 0
Preview
Baserunning’s Trajekt Moment This past week, the Baltimore Orioles were spotted doing pregame work on the bases reps that are typically reserved for the batting cage.

"If that slight increase in stolen base success typically shows up in the middle or late innings, and you can shift even a portion of it earlier in the game, you’re creating the same kind of advantage that Trajekt provides hitters better outcomes, sooner."

open.substack.com/pub/jrod2003...

6 days ago 3 3 0 1
Preview
Baserunning’s Trajekt Moment This past week, the Baltimore Orioles were spotted doing pregame work on the bases reps that are typically reserved for the batting cage.

"If that slight increase in stolen base success typically shows up in the middle or late innings, and you can shift even a portion of it earlier in the game, you’re creating the same kind of advantage that Trajekt provides hitters better outcomes, sooner."

open.substack.com/pub/jrod2003...

6 days ago 3 3 0 1
Preview
Lefties Eat Hot Dogs, Righties Eat Burgers | Baseball Prospectus Another difference between righty and lefty batters: success on challenges on the outer edge.

Lefty batters know the bottom of the zone pretty well, even if they struggle with its lateral borders. Kody Clemens got a key overturn before hitting a sharp single tonight. www.baseballprospectus.com/news/article...

1 week ago 3 1 0 0
Preview
What Tony Vitello Knows About Accountability That Big League Managers Miss The San Francisco Giants have become an early-season case study in how quickly “accountability” becomes the conversation.

"Before we blame players for errors, misunderstandings, or a lack of awareness, we have to be brutally honest with ourselves about whether we’ve done enough to teach it."

open.substack.com/pub/jrod2003...

2 weeks ago 0 2 0 0
Preview
What Tony Vitello Knows About Accountability That Big League Managers Miss The San Francisco Giants have become an early-season case study in how quickly “accountability” becomes the conversation.

"Before we blame players for errors, misunderstandings, or a lack of awareness, we have to be brutally honest with ourselves about whether we’ve done enough to teach it."

open.substack.com/pub/jrod2003...

2 weeks ago 0 2 0 0
Preview
Catchers Don’t Improve by Chance: Closing the Feedback Loop With Video Systems run everything.

"Instead of dumping video on players and hoping they figure it out, we’re tightening the feedback loop. They can see how the glove is working, how the pitch location influences movement, and how their decisions show up on film one pitch at a time."

open.substack.com/pub/jrod2003...

3 weeks ago 0 1 0 0
Advertisement
Preview
Catchers Don’t Improve by Chance: Closing the Feedback Loop With Video Systems run everything.

"Instead of dumping video on players and hoping they figure it out, we’re tightening the feedback loop. They can see how the glove is working, how the pitch location influences movement, and how their decisions show up on film one pitch at a time."

open.substack.com/pub/jrod2003...

3 weeks ago 0 1 0 0

Shameless plug:
www.baseballprospectus.com/news/article...

3 weeks ago 6 2 0 0

Maybe not a hot take, but I prefer my pre-game shows to be more unscripted and more free flow conversation rather than just asking questions in a circle.

4 weeks ago 1 0 0 0
Video

From yesterday finally able to get quality video and linked to some tagging data.

Final product allows our catchers to get quality video and feedback from the game.

1 month ago 0 0 0 0
Preview
Catchers Don’t Improve by Chance: Putting The Best Models In Front Of Our Players Everyone has seen them: video breakdowns on Instagram, highlight reels showing players doing exactly what we want.

"This is where priming comes in. Think of it like warming up your brain before a workout. By showing players the movement or situation before practice, we give their mind a blueprint to recognize the right movements and prepare for the skill."

substack.com/home/post/p-...

1 month ago 1 0 0 0
Preview
Which Knee Goes Down? | Baseball Prospectus Reading catcher choices against pitch movement.

"The league agrees on having a knee down.

It does not agree on which knee.
It does not agree on when.
And it certainly doesn’t seem to agree on why."

www.baseballprospectus.com/news/article...

1 month ago 0 0 0 0
Preview
Which Knee Goes Down? | Baseball Prospectus Reading catcher choices against pitch movement.

Which Knee Goes Down?
by Joshua Rodrigues (@jrodrigues39.bsky.social)
www.baseballprospectus.com/news/article...

1 month ago 2 2 0 0
Preview
Which Knee Goes Down? | Baseball Prospectus Reading catcher choices against pitch movement.

Really love this research from @jrodrigues39.bsky.social on catcher knee placement. I was asked to dig into this years ago with the Marlins, just as knees were starting to go down. It's crazy to see how much it's evolved since then!

www.baseballprospectus.com/news/article...

1 month ago 3 1 0 0
Preview
Catchers Don’t Improve by Chance: Turning Structure into Results When it comes to player development, systems are king.

"The goal was to look under the hood of the position so we could attack problems with a plan instead of guessing."

open.substack.com/pub/jrod2003...

1 month ago 1 0 0 0
Preview
Catchers Don’t Improve by Chance: Build a System That Wins How we tracked, analyzed, and visualized catcher performance to turn practice into measurable game impact without expensive tech or a full analytics staff.

"In a lot of ways, the model was what professional organizations do with systems like TrackMan and internal R&D Departments."

open.substack.com/pub/jrod2003...

1 month ago 1 1 0 0
Advertisement
Preview
Catchers Don’t Improve by Chance: Build a System That Wins How we tracked, analyzed, and visualized catcher performance to turn practice into measurable game impact without expensive tech or a full analytics staff.

"In a lot of ways, the model was what professional organizations do with systems like TrackMan and internal R&D Departments."

open.substack.com/pub/jrod2003...

1 month ago 1 1 0 0

Like the idea that you are better than your opponent but still have the patience to fight the urge to swing is a huge asset.

1 month ago 0 0 0 0

17 Walks in one game for Team USA to me just shows that they are willing to wear people down. Obviously Brazil was outmatched but something to continue to watch .

1 month ago 0 0 1 0

Do you have the search?

1 month ago 0 0 1 0

@tangotiger.com I can try to filter for Batter Interference but don't find any videos I get no results for that? Same for say Catchers Interference? Same for caught stealing in the Savant Search? Maybe its me?

1 month ago 0 0 1 0

The way that pitches move plays a part in which knee a catcher should be putting down. It would make sense to give youself some room to work. But the league is just throwing spaghetti around. Maybe its deeper than that. But. I'll probably write something at some point.

The spread is wild.

1 month ago 1 0 1 0
Post image

But then you look at the Dodgers. And they are almost universally left knee down.

1 month ago 1 0 1 0
Post image

Almost universally teams are going knee down across the board.

But when you break it down situationally from 2025 everyone seems to be guessing at what knee to put down and why?

One thing that is talked about alot is counteracting the pitch shape, but here is Arizona. Right knee down.

1 month ago 1 0 1 0
Preview
Berry’s Method: Reducing Mistakes Through Intentional Teaching Spring Training isn’t for survival it’s for construction it’s where habits get built, language gets standardized, and expectations get programmed.

"This is about pride in instruction it’s about caring enough to refine how you teach, not just what you teach. It requires stepping outside of what’s comfortable, outside of what you’ve always done, and being willing to adjust in small but intentional ways."

jrod20033.substack.com/p/berrys-met...

1 month ago 1 1 0 0
Advertisement
Preview
Berry’s Method: Reducing Mistakes Through Intentional Teaching Spring Training isn’t for survival it’s for construction it’s where habits get built, language gets standardized, and expectations get programmed.

"This is about pride in instruction it’s about caring enough to refine how you teach, not just what you teach. It requires stepping outside of what’s comfortable, outside of what you’ve always done, and being willing to adjust in small but intentional ways."

jrod20033.substack.com/p/berrys-met...

1 month ago 1 1 0 0