Archive for Featured

Bullpen Report: April 29, 2023

The 2023 version of the Bullpen Report includes five different sections, as well as the closer chart, which can be found at the bottom of the page.

We will always include a link to the full Closer Depth Chart at the bottom of the Bullpen Report each day. It’s also accessible from the RosterResource drop-down menu and from any RosterResource page. Please let us know what you think.

  1. Notable Workloads: Primary closers or valuable members of a closer committee who have been deemed unavailable or likely unavailable for the current day due to recent workload.
  2. Injury News
  3. Outlier Saves: Explanation for a non-closer earning a save during the previous day.
  4. Committee Clarity: Notes on a closer committee that clarify a pitcher’s standing in the group.
  5. Losing A Grip: Struggling closers who could be on the hot seat.

The “RosterResource” link will take you to the corresponding team’s RosterResource depth chart, which will give you a better picture of the full bullpen and results of the previous six days (pitch count, save, hold, win, loss, blown save).

Click HERE to view the full Closer Depth Chart.

Read the rest of this entry »


Lineup Analysis (4/28/23)

American League

Angels

Brandon Drury (.824 OPS, 5 HR, 0 SB) has started in eight of the last 10 games.

Chad Wallach (.978 OPS) and Matt Thaiss (.814 OPS) are splitting the catching duties. Read the rest of this entry »


Automated Fastball Velocity Increase Detection

Kamil Krzaczynski-USA TODAY Sports

Using baseball-savant data and some Python code, I have written a script that will loop through a pitcher’s three most recent appearances and flag any pitcher who has shown an increase in their fastball velocity. In raw form, it looks something like this:

Increased Detection System Example
Name Third most recent Second most recent Most recent Most recent increase Second most recent increase Avg_change
Reynaldo López 98.1 98.4 99.2 0.81 0.25 0.532
Carl Edwards Jr. 93.1 93.1 93.9 0.81 0.03 0.422
Carlos Estévez 96.5 96.5 96.7 0.17 0.03 0.097
SOURCE: Statcast

Looking at the table above we can see that each of these three pitchers increased their fastball (“FF” in savant data) consistently over their last three appearances. Don’t believe me? You can check my work with Savant visualizations:

Reynaldo Lopez Velo Increase

While I wrote more specifically about the merits of paying close attention to game-by-game fastball increases, quoting many other studies and great pieces along the way, I won’t be writing about it again here. Instead, I’ll simply show you a list of the starters and relievers who have increased game-by-game average velocity on their four-seamers and hope that you can take it from there. Sure, you could scroll through stacks of player pages to find players who have increased velocity until the cows come home, or you could write some code that will detect those increases and flag those players for you. I chose the second way. If you find it useful, I’ll do it on a more regular basis. That’s it. This post is more about the data than the words:

Three Most Recent Appearances – FF Increasers
Name Third Most Recent Second Most Recent Most Recent Avg. Change
Colin Poche 90.5 92.4 93.1 1.3
Chris Sale 93.0 94.3 94.7 0.8
Anthony Bass 93.2 94.4 94.6 0.7
Evan Phillips 94.2 95.5 95.8 0.8
Tucker Davidson 91.2 92.4 92.6 0.7
Nick Martinez 92.0 92.9 93.0 0.5
Yu Darvish 93.5 94.3 94.7 0.6
MacKenzie Gore 94.1 94.9 95.2 0.6
Ian Kennedy 91.2 91.9 92.6 0.7
Gerrit Cole 96.3 97.0 97.2 0.4
Max Fried 93.5 94.2 94.3 0.4
A.J. Puk 95.0 95.6 96.0 0.5
Kyle Gibson 91.4 92.0 92.0 0.3
Craig Kimbrel 93.9 94.4 94.9 0.5
James Kaprielian 92.8 93.3 93.3 0.2
Giovanny Gallegos 93.0 93.5 94.1 0.6
Logan Gilbert 94.6 95.1 95.6 0.5
Bryce Elder 89.6 90.1 90.6 0.5
Rafael Montero 95.5 95.9 96.3 0.4
Richard Lovelady 89.9 90.3 90.6 0.3
Phil Maton 89.2 89.5 90.5 0.7
Trevor Richards 92.4 92.7 93.0 0.3
Patrick Sandoval 92.6 92.9 92.9 0.2
Emilio Pagán 94.1 94.4 95.7 0.8
Jeurys Familia 93.9 94.2 94.4 0.3
Reynaldo López 98.1 98.4 99.2 0.5
Carlos Carrasco 91.1 91.3 91.7 0.3
Tylor Megill 94.1 94.3 95.0 0.4
Matt Bush 93.2 93.3 94.7 0.8
Enyel De Los Santos 94.7 94.8 94.9 0.1
Drew Rasmussen 95.5 95.6 95.8 0.1
Brusdar Graterol 98.1 98.2 98.8 0.4
Carl Edwards Jr. 93.1 93.1 93.9 0.4
Carlos Estevez 96.5 96.5 96.7 0.1
SOURCE: Statcast

Starting Pitcher Chart – April 28th

Steven Bisig-USA TODAY Sports

In past seasons I’ve done this Daily SP Chart down the stretch and invariably there are comments asking why I don’t do it all season. I’ve never really had a great answer for that so now I’m doing it!

Once the season gets going, the chart will include their performance over the last five starts (for the first few weeks, it’ll be their 2023 stats), their opponent’s wOBA versus the pitcher’s handedness, my start/sit recommendation for 10-team, 12-team, and 15-team (or more) leagues, and then a note about them. The opponent wOBA will remain blank for a while until we get some data and because there is so much lineup turnover year-to-year, I’m not going to include last year’s mark. I’ll start including wOBA data on April 17th.

These are general recommendations, and your league situation will carry more weight whether you are protecting ratios or chasing counting numbers. This is for standard 5×5 roto leagues. The thresholds for H2H starts are generally lower, especially in points leagues so I thought there would be more value focusing on roto.

Trying something new by splitting up the data a bit with the recos & comments in one chart and the recos and stats in another. Let me know if that’s preferable to putting it all in one. I decided this after writing it, but for the future this could give me a bit more space for deeper comments, too. At any rate, I’m open to any feedback even if it’s constructive criticism!

Read the rest of this entry »


Beat the Shift Podcast – Hot Episode w/ Jason Collette

The Hot episode of the Beat the Shift Podcast – a baseball podcast for fantasy baseball players.

Guest: Jason Collette

Strategy Section

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Roto Riteup: April 28, 2023

I love stories like this:

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Why RotoGraphs Is Infatuated with the NFBC

There are been complaints about being FanGraphs being NFBC (National Fantasy Baseball Championship) centric (e.g. Big Kid Adds) and we should consider other league types. The deal is that besides a few exceptions, the NFBC provides a superior product to analyze drafts and in-season player movement.

First off, I know there are leagues just as or more competitive than the NFBC, but are their drafts and rosters movements made public like the NFBC. Just last week you could notice that I was ranked 2457th out of 2460 teams in the Online Championship. Having the information available is huge. Read the rest of this entry »


Starting Pitcher Chart – April 27th

D. Ross Cameron-USA TODAY Sports

In past seasons I’ve done this Daily SP Chart down the stretch and invariably there are comments asking why I don’t do it all season. I’ve never really had a great answer for that so now I’m doing it!

Once the season gets going, the chart will include their performance over the last five starts (for the first few weeks, it’ll be their 2023 stats), their opponent’s wOBA versus the pitcher’s handedness, my start/sit recommendation for 10-team, 12-team, and 15-team (or more) leagues, and then a note about them. The opponent wOBA will remain blank for a while until we get some data and because there is so much lineup turnover year-to-year, I’m not going to include last year’s mark. I’ll start including wOBA data on April 17th.

These are general recommendations, and your league situation will carry more weight whether you are protecting ratios or chasing counting numbers. This is for standard 5×5 roto leagues. The thresholds for H2H starts are generally lower, especially in points leagues so I thought there would be more value focusing on roto.

Trying something new by splitting up the data a bit with the recos & comments in one chart and the recos and stats in another. Let me know if that’s preferable to putting it all in one. I decided this after writing it, but for the future this could give me a bit more space for deeper comments, too. At any rate, I’m open to any feedback even if it’s constructive criticism!

Read the rest of this entry »


Bullpen Report: April 26, 2023

The 2023 version of the Bullpen Report includes five different sections, as well as the closer chart, which can be found at the bottom of the page.

We will always include a link to the full Closer Depth Chart at the bottom of the Bullpen Report each day. It’s also accessible from the RosterResource drop-down menu and from any RosterResource page. Please let us know what you think.

  1. Notable Workloads: Primary closers or valuable members of a closer committee who have been deemed unavailable or likely unavailable for the current day due to recent workload.
  2. Injury News
  3. Outlier Saves: Explanation for a non-closer earning a save during the previous day.
  4. Committee Clarity: Notes on a closer committee that clarify a pitcher’s standing in the group.
  5. Losing A Grip: Struggling closers who could be on the hot seat.

The “RosterResource” link will take you to the corresponding team’s RosterResource depth chart, which will give you a better picture of the full bullpen and results of the previous six days (pitch count, save, hold, win, loss, blown save).

Click HERE to view the full Closer Depth Chart.

Read the rest of this entry »


Roto Riteup: April 26, 2023

SP1:

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