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Keaton Arneson

@keatonarneson.fangraphs.com
2.5K followers 261 following 310 posts

Fantasy Baseball (x2 NFBC Overall Finisher) | Developer @FanGraphs.com | Engineer

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Keaton Arneson @keatonarneson.fangraphs.com · 03/10/2026
Fun fact alert! Bryce Harper played 162 games in 2026 and tied Mike Trout in WAR... But it was less than Cleveland's "STARS" of Kwan, Rocchio, Delauter, and Jake Bauers (former).
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Keaton Arneson @keatonarneson.fangraphs.com · 24/09/2026
Carter Jensen currently has a 3.7 WAR. For comparison, Salvador Perez's best season was 3.2 WAR (2013 and 2024).
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Keaton Arneson @keatonarneson.fangraphs.com · 13/09/2026
To give Carter credit, he had one of the most famous HR in World Series history.
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Keaton Arneson @keatonarneson.fangraphs.com · 13/09/2026
Joe Carter watch alert! - Jo Adell is at 86 RBI and 0.3 WAR. Carter had 3 seasons of 100+ RBI and negative WAR. Including 1990 with 115 RBI and -2 WAR
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Keaton Arneson @keatonarneson.fangraphs.com · 11/09/2026
3 HR in 3 games in 2019?
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Keaton Arneson @keatonarneson.fangraphs.com · 24/08/2026
I assume it's the game log scores and not weighted by number of pitches.
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Keaton Arneson @keatonarneson.fangraphs.com · 24/08/2026
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Keaton Arneson @keatonarneson.fangraphs.com · 23/08/2026
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Reposted by Keaton Arneson
FanGraphs Baseball @fangraphs.com · 09/07/2026
The Crowdsourced Trade Value Tool Is Back blogs.fangraphs.com/the-crowdsou...
blogs.fangraphs.com
The Crowdsourced Trade Value Tool Is Back
It’s the return of our crowdsourced trade value tool. Pick who you prefer between two players, over and over again, to build your own rankings.
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Keaton Arneson @keatonarneson.fangraphs.com · 02/07/2026
Since I added Dansby Swanson in FAAB, he's batting .333 16 9 29 4 in only 57 AB. Some times it pays to be lucky than good.
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Keaton Arneson @keatonarneson.fangraphs.com · 27/06/2026
At least he's been above average... Technically
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Keaton Arneson @keatonarneson.fangraphs.com · 26/06/2026
Just wait until we start Bailey at C, Hedges at DH, Ingles at LF, and Fry wherever. That's 4 catchers in one lineup. Just for a sanity check, Hedges has been our 2nd best active hitter in the past 30 days.
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Keaton Arneson @keatonarneson.fangraphs.com · 26/06/2026
The Guardian's offense is so bad right now, they are going with 4 catchers on the active roster and none of them were the opening day catcher.
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Keaton Arneson @keatonarneson.fangraphs.com · 24/06/2026
Hoerner was like a top 10 fantasy player in April and since then he hasn't had a single positive week.
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Keaton Arneson @keatonarneson.fangraphs.com · 15/06/2026
You won't find a first rounder at the top of the Player Rater until #18 Ohtani
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Keaton Arneson @keatonarneson.fangraphs.com · 09/06/2026
3.4% SwStr% is his lowest of the year. He's actually #1 in botERA in MLB this year, but an all left handed lineup might say otherwise.
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Keaton Arneson @keatonarneson.fangraphs.com · 05/06/2026
We actually talked about strike%. So it's good to know that other people are interested in that.
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Reposted by Keaton Arneson
FanGraphs Baseball @fangraphs.com · 05/06/2026
Introducing Pitcher Game Cards blogs.fangraphs.com/introducing-...
blogs.fangraphs.com
Introducing Pitcher Game Cards
The Pitcher Game Cards are designed to provide a detailed, game-level snapshot of every pitcher who appears in a game.
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Keaton Arneson @keatonarneson.fangraphs.com · 04/06/2026
Cecconi has definitely corrected his season in the past few starts, but it's not from stuff improvement. As a Guardians fan, I'm liking the results, but worry if it's sustainable.
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Keaton Arneson @keatonarneson.fangraphs.com · 03/06/2026
Is the key to beat Schlittler to only have left handed batters?
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Keaton Arneson @keatonarneson.fangraphs.com · 30/05/2026
And Swanson barely made the cut. Witt and Perdomo were extended when they were just getting started. Correa is the only free agent SS I can think of that was doing well.
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Keaton Arneson @keatonarneson.fangraphs.com · 30/05/2026
Swanson, Bogaerts, Turner, Seager, Bichette, Adames, and Story are all SS that signed huge free agent contracts and not a single one is even an average hitter this year.
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Keaton Arneson @keatonarneson.fangraphs.com · 30/05/2026
Results weren't there, but stuff and SwStr% were excellent.
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Keaton Arneson @keatonarneson.fangraphs.com · 30/05/2026
1st inning back
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Big difference in fastball and changeup quality last night for the save.
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Check out the scores/game-graphs pages
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Hint hint ... Hit the refresh button
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
PitchingBot is live. Stuff+ the next morning. As to where, you'll have to check out the scores/game-graphs pages the rest of the week.
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Live data as well 🤓
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Down the middle isn't very good?
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Keaton Arneson @keatonarneson.fangraphs.com · 28/05/2026
Very soon
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Keaton Arneson @keatonarneson.fangraphs.com · 27/05/2026
Amazing numbers!!!
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Keaton Arneson @keatonarneson.fangraphs.com · 27/05/2026
Stuff+, Location+, and Pitching+ Primer | Sabermetrics Library share.google/rUjElriU92Ui...
share.google
Stuff+, Location+, and Pitching+ Primer
Pitching+ is one of three models that, along with Stuff+ and Location+, attempts to look at the process underlying a pitcher’s performance in order to remove some of the noise that can be present when...
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Keaton Arneson @keatonarneson.fangraphs.com · 27/05/2026
👀
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Keaton Arneson @keatonarneson.fangraphs.com · 01/05/2026
Brandon Woodruff's fastball stuff+ by game: 113 117 107 115 93 47 👀
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Keaton Arneson @keatonarneson.fangraphs.com · 01/05/2026
Best botERA by almost a full run.
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Keaton Arneson @keatonarneson.fangraphs.com · 20/04/2026
Should be on there now
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Keaton Arneson @keatonarneson.fangraphs.com · 13/04/2026
Just a reminder that the FanGraphs scoreboard has gotten a full makeover this year.
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Reposted by Keaton Arneson
FanGraphs Baseball @fangraphs.com · 12/03/2026
FanGraphs Changelog: The Offseason blogs.fangraphs.com/fangraphs-ch...
blogs.fangraphs.com
FanGraphs Changelog: The Offseason
Introducing a semi-regular update on what we’ve been doing on the development side of the site.
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Keaton Arneson @keatonarneson.fangraphs.com · 08/03/2026
You are correct!
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Keaton Arneson @keatonarneson.fangraphs.com · 06/03/2026
Not the answer I'm looking for, but his stuff+ did drop as well.
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Keaton Arneson @keatonarneson.fangraphs.com · 06/03/2026
That's a good guess, but not correct. He did lose stuff+ as the season went a long as well.
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Keaton Arneson @keatonarneson.fangraphs.com · 06/03/2026
The red team color should eliminate about half the league. Hint he's a starter.
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Keaton Arneson @keatonarneson.fangraphs.com · 06/03/2026
Can anyone guess which pitcher this is based on his stuff+ dropping?
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Keaton Arneson @keatonarneson.fangraphs.com · 05/03/2026
That was a quick find. It was just added.
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Keaton Arneson @keatonarneson.fangraphs.com · 26/02/2026
I think Goodman is the one going too high, even though projections love him.
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Keaton Arneson @keatonarneson.fangraphs.com · 26/02/2026
Because you think he was overrated or you want the cheaper price?
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Reposted by Keaton Arneson
FanGraphs Baseball @fangraphs.com · 19/02/2026
Introducing the FanGraphs Lab blogs.fangraphs.com/introducing-...
blogs.fangraphs.com
Introducing the FanGraphs Lab
The Lab is a collaboration between the writing team and the engineering team here at FanGraphs, a joint effort to create more ways to sort through and visualize the huge crush of data that pervades…
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Keaton Arneson @keatonarneson.fangraphs.com · 19/02/2026
Tanner Bibee's Sinker command was 78/80 in 3 ball counts. His 4 seam was 58 in 3 ball counts. Still really good, but not as dominant as his sinker.
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Keaton Arneson @keatonarneson.fangraphs.com · 16/02/2026
Parker Messick was allergic to giving up walks with his fastball. He had a 90 command grade in 3 ball counts. That breaks the upper scale of 80 for PitchingBot command.
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