Ryan Gunther
ryangunther1.bsky.social
Ryan Gunther
@ryangunther1.bsky.social
- Writing a master's in statistics thesis that uses machine learning on baseball biomechanical data
- Occasional posts about progress on computer vision at the indy ball level
- Brock University MSc 2025

Github here: https://github.com/RyanGunther
I'm back to inquire if the "Ryan G" who finished 10th could be mine. (I am a Ryan G, the link you provided is a filthy generic
Ryan)

Is there any way to figure out, given I don't remember any of my answers? Unlike me to not have that saved, but I've searched high and low and found nothing
November 24, 2025 at 3:17 AM
This is excellent, is this available to the public on FG? I saw your article today but haven’t read it yet
November 20, 2025 at 11:36 PM
Very good, thanks. My above post was more about the post estimation of the body (white dots on knees, shoulders, ankles, etc) but I think this info is super useful for Stephen’s work and probably mine at some point too
November 16, 2025 at 7:07 PM
Just saw your other post referencing a streamlit app, got it now!
November 15, 2025 at 10:34 PM
Not sure if this was a reply to me or not, but I remember asking Tom Tango about this, this visualization is essentially “one typical swing” for a hitter but won’t give you swing-by-swing variation
November 15, 2025 at 10:32 PM
For sure. The open biomechanics project (OBP) is super interesting and is full of pitch deliveries as well, which I know is much more your wheelhouse than mine
November 15, 2025 at 10:15 PM
To sum it up, to get to a different place, one must travel a different route!
November 15, 2025 at 5:09 PM
The purple dots ends up reaching a max "right side" (in this clip) location about 10cm/4 inches further right than red does

I should disclose that this is an anonymized hitter from the openbiomechanics project (pro/college/HS), and not an MLB hitter, but the concepts should hold at all levels
November 15, 2025 at 5:07 PM
with that being said, I think there's a case for the barrel on an inside pitch never overlapping with the barrel's location on the early part of an outside pitch. I can dive deeper into this if you think I could help you

If I've misinterpreted anything please correct me
November 14, 2025 at 5:14 PM
Ok, I agree more with your updates than the initial post. If I have interpreted the plots correctly, that is the barrel's location throughout a hypothetical swing

If my understanding is correct, the first plot doesn't natural at all. The quote posts of Ohtani, Freeman, and Kwan look a lot better
November 14, 2025 at 5:11 PM
definitely will read this tomorrow since it's in my wheelhouse!
November 14, 2025 at 7:01 AM
More on the model tomorrow once it's not 2am anymore. First thing that jumps out here is Del Castillo getting to a super twitchy / athletic position in these early frames and then letting his body rotate and release out of it
November 14, 2025 at 6:56 AM
Yeah, I deserved that 🤣 makes sense, given velo plummets in that middle zone too
November 7, 2025 at 7:15 PM
Fun topic.

For the last graph, I’m assuming “run value” is run value for hitter? I.e. lower on the y axis is better for the pitcher? Or do I have that backwards
November 7, 2025 at 3:55 PM
Jays fan. Felt.
October 28, 2025 at 6:03 AM
Thanks, I didn’t realize FG and BRef had different win probability models. The most granular I can see on BRef is whole numbers rounded (Jays 37% to 77%), no decimals, so I went to FG for a closer look.

I didn’t think counts were a factor in WPA, thanks for confirming that!
October 22, 2025 at 6:41 PM
@tangotiger.com maybe you know…have I missed something here? I see FanGraphs having the Jays win prob before the play as 36.7, after 77.5. Difference is 40.8, multiply by 0.500 (coefficient for CS G7) and should get 20.4. BBREF has the cWPA as 19.73%. Are they factoring in a 1-0 count?
October 22, 2025 at 5:38 PM