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harrypav.bsky.social
Baseball Prospectus R&D leader and PitchInfo founder.
288 posts 3,302 followers 471 following
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Posts 22 Comments 28

Megill is 89th percentile in Movement Spread, which is wild for a guy who throws nothing but a FA and KC

submitted 6 days ago • 1 comment

Did I spend considerable time considering and testing modeling structures that would be more robust to a weird, unicorn pitch with a new tag, or did I just get lucky that the upcoming StuffPro update likes Skenes's splinker now? The world will never know.

submitted 9 days ago • 0 comments

Congratulations to Gary Gillette, Rob Fitts, Richard Malatzky, the 2025 Chadwick Award Winners (for lifetime excellence in baseball research). sabr.org/latest/sabr-...

submitted 10 days ago • 0 comments

Just feels like a good time to note that the ABS 'mid plate plane' and batter height dimensions aren't some new thing they're testing out, it's the result of a few years of testing and trial-and-error.

submitted 11 days ago • 2 comments

ICYMI, some code for clustering pitches and calculating movement vs expected. Check it out and- more importantly- check out Nick's Kaggle competition for predicting Ks using arm angle

submitted 13 days ago • 1 comment

it's easy to simply go into your settings and make it so the app makes you remember to do it. bsky.app/settings/acc...

submitted 15 days ago • 0 comments

Students: THIS 👇 is one of the reasons to do the #SMTDataChallenge. A *big* part of analytics success is communicating your awesome ideas to non-quants. The Data Challenge helps you learn how. It’s no accident 20% of ppl who’ve submitted projects have been hired in sports!

submitted 15 days ago • 1 comment

We'll soon have many public versions of DDZ. A reminder that Max laid out the methodology pretty well here: dynamic-dead-zone.streamlit.app

submitted 16 days ago • 1 comment

Last weekend I went to Fair Park and took some pictures of some enduring Art Deco architecture, and then I wrote about it (and the weirdness of going to the fair when there isn't the fair). witchhazelphoto.beehiiv.com/p/empty-buil...

submitted 17 days ago • 0 comments

See comment 1 and 2 as an update to this thread below: tangotiger.com/index.php/si... Thank you to @srbrown70.bsky.social for the idea to pursue

submitted 17 days ago • 0 comments

This is re: Trump's EO to ban trans persons from the military. Reyes is a federal judge. If I got this etherized in court I'd walk into the fucking sea. bsky.app/profile/mike...

submitted 18 days ago • 33 comments

we're still in the midst of a subscription drive, of a sort, and could use all the help we can get to keep prices right where they are and the value proposition as rewarding as possible. Admittedly the start to 2025 hasn't even matched 2024, so please spread the word far and wide.

submitted 18 days ago • 3 comments

This is fundamental to a basic rule of journalism: You are what you publish and print, and that includes advertising. 1/N

submitted 19 days ago • 1 comment

Steve makes an excellent point as to how we should define Early/Late. At the moment, I took the easy (wrong?) way out, and set a line parallel to the front of the plate, but individualized to each batter But, I've thought about a line that is more natural in terms of the swing, which is ... 1/2

submitted 19 days ago • 2 comments

Awesome discussion of our recent TTOP piece starting around 12:30 on the latest @ewpod.bsky.social episode! Thanks for the shoutout! blogs.fangraphs.com/effectively-...

submitted 20 days ago • 0 comments

That part 👇🏻

submitted 22 days ago • 72 comments

Used a spike grip at a time when it was much less common www.mlb.com/video/the-pe...

submitted 22 days ago • 0 comments

Today at @baseballprospectus.com : Do projection systems have an easier time with players who have a lot of MLB experience compared to those with a limited body of work?

submitted 23 days ago • 0 comments

Correlations between bat speed changes and the BPro dashboard hitter metrics changes. Bat Speed increases are associated with increases in both HRs and whiffs. Also associated with an increase in DRC+, suggesting on average the additional HR are worth it, but tons and tons of individual variation.

submitted 24 days ago • 1 comment

Just donated to the Memphis Public Library in honor of this generous woman and her late husband.

submitted 25 days ago • 3 comments

Today's reason for a @baseballprospectus.com subscription: The third-time-through-the-order penalty for pitchers is well-established. The cause, though, is not. Is it batter familiarity? Is it pitcher fatigue? @srbrown70.bsky.social has the data.

submitted 26 days ago • 0 comments

Familiarity or Fatigue? by Stephen Sutton-Brown (@srbrown70.bsky.social)

submitted 26 days ago • 1 comment