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Keaton Arneson

@keatonarneson.fangraphs.com
2.5K followers 261 following 309 posts

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

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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
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 · 23/08/2026
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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 · 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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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
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
Live data as well 🤓
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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 · 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 · 06/03/2026
Can anyone guess which pitcher this is based on his stuff+ dropping?
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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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Keaton Arneson @keatonarneson.fangraphs.com · 16/02/2026
CJ Kayfus and Bo Naylor were the unsung heroes during Cleveland's 20-7 September.
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Keaton Arneson @keatonarneson.fangraphs.com · 08/02/2026
Robbie Ray 2020 - 6.62 ERA Ray 2021 - 2.84 ERA Jesus Luzardo 2021 - 6.61 ERA 2022 - 3.32 ERA Yusei Kikuchi 2022 - 5.19 ERA 2023 - 3.86 ERA Carlos Rodon 2023 - 6.85 ERA 2024 - 3.96 ERA Trevor Rogers 2024 - 4.92 ERA 2025 - 1.81 ERA Sean Manaea 2025 - 5.64 ERA 2026 - ???
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Keaton Arneson @keatonarneson.fangraphs.com · 29/01/2026
Oopsy's favorite hitter pick is Jo Adell. Easy pick in my DC draft.
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Keaton Arneson @keatonarneson.fangraphs.com · 12/01/2026
One thing I appreciate about OOPSY projections is it can be different compared to the rest. In this example, Steamer and BAT had identical 4.04 ERA, but OOPSY is down to 3.37.
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Keaton Arneson @keatonarneson.fangraphs.com · 31/12/2025
THE BAT/BAT X are live now 👀
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Keaton Arneson @keatonarneson.fangraphs.com · 30/12/2025
I find it interesting that Caminero has a career .260 average, but Steamer has him climbing to .278. Babip positive regression.
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Keaton Arneson @keatonarneson.fangraphs.com · 05/12/2025
Looks like next year I need to step up my game to reach Diamond level.
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Keaton Arneson @keatonarneson.fangraphs.com · 02/12/2025
Gavin Lux only had 5 HR and 1 SB in 500 PA. That ties Joe Mauer (2018) for the worst HR + SB (6 HR) since Adeiny Hechavarria with 3 HR and 1 SB in 2016.
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Keaton Arneson @keatonarneson.fangraphs.com · 13/11/2025
Samuel Basallo is going into his age 21 season. The only age 21 catcher season that I can find recently was Francisco Alvarez in 2023. He went .209 51 25 63 2. His ADP is currently 177 while Adley Rutschman's is 165. I don't think history is on his side to meet the expectations of the #13 C.
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Keaton Arneson @keatonarneson.fangraphs.com · 11/11/2025
Using FG Depth Charts playing time with Steamer: Player A - 630 PA .254 83 20 68 30 ADP 50 Player B - 630 PA .252 84 20 65 29 ADP 200
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Keaton Arneson @keatonarneson.fangraphs.com · 10/11/2025
First thought of looking at ADP. Caminero is going too high for someone that doesn't help in SB or AVG. I'd rather have guys like Tatis, Lindor, or Chourio over him easily.
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Keaton Arneson @keatonarneson.fangraphs.com · 10/11/2025
Projections page has updated NFBC DC ADP! For those of us who don't take a break from fantasy baseball.
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Keaton Arneson @keatonarneson.fangraphs.com · 04/11/2025
Steamer projections are out
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FanGraphs Baseball @fangraphs.com · 23/10/2025
FanGraphs is Ad Free today! That's right, everyone who visits the site today gets to enjoy all our great coverage and features without ads. Check it out, and if you like what you see, consider becoming a FanGraphs Member to get the ad-free experience every day!
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Keaton Arneson @keatonarneson.fangraphs.com · 06/10/2025
That's a huge cliff at 3B this year. Pretty much all or nothing.
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Keaton Arneson @keatonarneson.fangraphs.com · 06/10/2025
The new scoreboard is launched 🎉
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Keaton Arneson @keatonarneson.fangraphs.com · 28/09/2025
Great way to end the regular season!
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Keaton Arneson @keatonarneson.fangraphs.com · 28/09/2025
The new scoreboard beta is out!
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Keaton Arneson @keatonarneson.fangraphs.com · 04/09/2025
Lots of interesting names at the bottom of xwOBA in the second half.
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Keaton Arneson @keatonarneson.fangraphs.com · 28/08/2025
Nolan McLean is SP #14 for the second half in only 3 starts. Everyone above and below is pretty much double his innings.
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FanGraphs Baseball @fangraphs.com · 15/08/2025
FanGraphs Turns 20 Years Old Today! blogs.fangraphs.com/fangraphs-tu...
blogs.fangraphs.com
FanGraphs Turns 20 Years Old Today!
Where does the time go?
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Keaton Arneson @keatonarneson.fangraphs.com · 13/08/2025
3-way fight for the #1 fantasy player this year. Though at his ADP, Raleigh would be the most valuable. Caveat 2-catcher leagues.
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Keaton Arneson @keatonarneson.fangraphs.com · 06/08/2025
#1 pitcher in the second half. Civale has been displaced.
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Keaton Arneson @keatonarneson.fangraphs.com · 04/08/2025
Just as we all expected, Civale being the #1 pitcher in the second half.
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