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Rates & Barrels: A show about Baseball

Quantifying Deception & The Rays’ Fast Start

Rates & Barrels: A show about Baseball

The Athletic

Baseball, Sports, Mlb, Fantasy Baseball

4.7875 Ratings

🗓️ 7 May 2026

⏱️ 62 minutes

🧾️ Download transcript

Summary

Eno, Trevor, and DVR unveil Trevor’s new deception model, digging into how it works, what it’s designed to measure, and the challenges of quantifying deception. They also break down the current leaders in deception among starters and relievers, and reveal where listeners can access the model (Hint: coming soon to Discord!). Later, they bring back How I’d Pitch This Guy with a look at Junior Caminero before shifting to the Rays’ rotation, focusing on Shane McClanahan and Griffin Jax.

Rundown:

1:15 Quantifying Deception: From 2016 to 2026

8:39 Current Kings of Deception: Top-Five Starting Pitchers for 2026

9:30 Current Kings of Deception: Top-Five Relief Pitchers for 2026

15:10 Looking to the Future: More Precision From Impact of Hitter's Vision?

23:15 Deception Model Coming Soon to Discord!

23:51 The Rays' 24-12 Start: What's Working Thus Far?

26:04 Is the League Pitching the Rays Wrong?

36:44 How I'd Pitch This Guy: Junior Caminero

42:33 Starkville Sneak Peek

44:38 Knocking the Rust Off: Shane McClanahan

49:46 Getting Out of Rehab Mode

54:37 Expectations for Griffin Jax as a Starter

Eno's FanGraphs Blog Post: https://blogs.fangraphs.com/an-attempt-to-quantify-pitcher-deception/

Follow DVR on Bluesky: @DVR.bsky.social

Follow Eno on Bluesky: @enosarris.bsky.social

Follow Trevor on Bluesky: @iamtrevormay.bsky.social

e-mail: ratesandbarrels@gmail.com

Join our Discord: https://discord.gg/FyBa9f3wFe

Subscribe to The Athletic: theathletic.com/ratesandbarrels

Hosts: Derek VanRiper & Eno Sarris

With: Trevor May

Editor: Jason Potere


Hosted on Acast. See acast.com/privacy for more information.

Transcript

Click on a timestamp to play from that location

0:00.0

A wise man once wrote, deception seems impossible to quantify. How are you going to put a number on something like the invisible thrown by Usmaro Petit? The ball is there and then it isn't, and then it's back. Put that in your number machine, nerd boy. The year was 2016. We've come a long way, haven't we, you know?

0:18.3

Are those my words? Those are.

0:23.6

Oh, Lord, we're in trouble today.

0:28.2

Today on Rates and Barrels, we dig into an attempt to quantify deception with a new model created by our friend and co-host, Trevor May.

0:31.1

Let's go.

0:44.0

Thank you.

0:47.6

On this episode, we look at Trevor's new deception model.

0:50.9

Talk about a few guys that are popping there, both on the starter and reliever side.

0:55.0

We're going to dig into the Tampa Bay raise. Enos stumbled into a really interesting question

0:59.9

about how teams are pitching the raise as a group. We'll try to figure out what's happening behind

1:04.9

their fast start, 24 and 12 entering play on Thursday. Only a half game back of the Yankees. We're

1:10.8

also going to dust off a

1:11.7

how I'd pitch this guy segment for Junior Cam Minero. Eno, I got to ask, since you wrote that piece

1:18.7

over at Fangraphs in 2016, a lot has changed. Do you feel like you were really onto something 10 years

1:24.5

ago with quantifying deception.

1:30.3

Yeah, I mean, it was poorly done.

1:33.0

I guess I was just sort of ham-fisted math. And I took basically release point and tried to make a model that predicted movement against

1:40.7

release point.

1:42.3

And then I looked at people who had the most deviation from it.

1:45.4

And some of the stuff was not so helpful because it was like Darren O'Day and Brad Ziegler,

1:51.7

where it's like, oh, they're just, they just have a really weird release point.

1:57.3

But it is interesting because some of those problems still exist to till today.

...

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