The RosterResource Closer Depth Chart Is Here!
The latest addition to our RosterResource collection at FanGraphs is the Closer Depth Chart. While it is not quite the finished product yet — we will be adding filters and sorting capability in the near future and also welcome any feedback or suggestions you have — this version has plenty of relevant information on one page.

What information is included?
Many teams either use a closer committee or do not name a closer, leaving us to make assumptions about who their closer is. As such, there are as many as six pitchers listed for each team, as well as any notable relievers on the Injured List or Restricted List. With the information provided, we can make an educated guess about who could get a save chance on a particular day. On the report, you’ll see the following:
- THR: Left (L) or Right (R) handed.
- Projected Role: Closer, Closer Committee, Co-Closer, Setup Man, Middle Reliever, Injured List, Restricted List.
- Pitcher Usage: Last six days of usage, including pitch count, save (Sv), hold (H), blown save (BS), win (W), loss (L), Injured List (IL), Injured/Active (Inj), and Alternate Site/Minors (AAA).
- 2021 Stats: vFA (fastball velocity), vSI (sinker or cutter velocity), appearances, innings pitched, ERA, saves, holds, K/9, and K%.
- Tags (listed next to the player’s name): Unavailable (black square), High Usage Alert (blue square), On The Hot Seat (red square), Reliever On The Rise (green upward pointing arrow).
“Unavailable” means that a pitcher has officially been ruled out of pitching out of the bullpen on that day due to injury, workload, or being named as the “opener” or spot starter.
“High Usage Alert” means that a reliever is coming off a 20-plus pitch day, or pitching on at least two consecutive days or three out of four days. It doesn’t mean that a pitcher has been ruled out for that particular day.
“On The Hot Seat” means that a closer or high-profile setup man could be in danger of being demoted from their current role due to poor performance.
“Reliever On The Rise” means that a pitcher is performing at a high level and is likely moving up the bullpen hierarchy.
How often is the closer depth chart updated?
Updates on projected roles are often made in real-time while games are still in progress. Others are made after an injury or a bullpen-related comment by a manager.
Tags and bullpen usage are updated each morning before any games are played.
What Additions Will Be Made?
Filters and sorting capability are the main features we plan to add in the near future. This will allow readers to view only closers or “Relievers On The Rise,” for example, or remove all closers with a “High Usage Alert.” We will also be adding an extra column with each team’s opponent for that day.
Anything else we add or change will be a result of reader feedback and suggestions. Please use the comment section to let us know what you like or dislike about the Closer Depth Chart, and what other information you’d like to see.
Looks great. Perhaps the daily bullpen report article could just reference this and have a blurb about each change. For example, SF: Moronto to DL, Peralta from middle relief to setup.
This is a fantastic resource – thank you. Probably hard to track but one thing that would be helpful is to know who is warming up when despite usage as this often gives a better chance of bullpen positioning.
Definitely hard to track. We do try to make a note of that stuff on the Bullpen Report when we’re writing updates on Closer Committees. But still hard to track unless we were actually watching that game or if we search Twitter in hopes that someone tweeted about a particular pitcher warming up in a particular situation.
Yeah, I think any changes will usually be explained in one of the sections of the “Bullpen Report”. Would be good if we could figure out a way to show transactions that are only related to late-inning relievers somewhere on the Closer Depth Chart page.
this chart: 🟦
Best comment 🙂
I love Roster Resource and love it more now that it is at FanGraphs and loads super fast. Thanks so much for your hard work Jason, I appreciate you.
Updating real-time? Jason you’re a beast! Can’t even start to imagine the maintenance and upkeep required.
How do you navigate to this chart from the homepage?
There needs to be a link added on the RosterResource dropdown menu, but it ain’t there yet…
It’s there now. In the RosterResource drop-down menu, you’ll see it in the In-Season tools under the teams.
Excellent. This looks great. One comment. If you have K% do you really need K/9? I don’t bother with K/9 anymore and that feels a bit redundant. I would have BB% instead of K/9.
My reasoning for including both was that I felt like the transition to K% > K/9 for FanGraphs readers is still in progress. A lot of people are still used to K/9. But I think there might only be room for one of those once we add a column for that day’s opponent. Thanks for the feedback.
I love this. There are so many pieces of information to take away. Thank you for this hard work, Jason.
Great work, love it
Nice job! Could be interesting put pLI, wpa and CSW% in stats. For me, the three most useful stats for relievers
Jason, you are the best. Have used Roster Resource for years. I marvel at the work you put in. Thanks!
Very cool. But what is up with Familia’s 48.6 mph fastball? Some of the pitch data looks a little funky.
Oh, and maybe, Leverage Index?
and/or WPA?
Seems OK now. Might’ve been a temporary glitch.
Great stuff! For those who refer to this for longer-term information, it would be much appreciated if you could also characterize the closer’s role, such as “Defined Closer” (outright named to the role by the manager, or has held the job for at least (e.g.) ten appearances, or “ambiguous role” (limited number of consecutive closer appearances (e.g. < 10), in a bullpen with whose organization has demonstrated committee tendencies). Those are far from perfect criteria, but I hope this communicates the concept. Thanks!
It’s a great suggestion. Not sure the best way to do that, but defining each situation or even having a 1-5 or 1-10 rating system could be helpful.
Thank-you, Jason!
How do you interpret that Melancon doesn’t have a vFA or vSI?
I’m pretty sure that’s the reason he’s not on my roto team 🙂
I actually just noticed that. Looks like his pitch is registering as a cutter. I was pretty sure vSI covered sinkers and cutters, but I guess those are separate.
Excellent product. Well done.
The Closer Depth Chart is a great addition. Thank you.
I have a small suggestion for the primary DEPTH CHART page: in the “2021 Schedule” section, can you add a “(R)”ight or “(L)”eft indicator after the “OPP PROJ STARTER”s name? It would be really useful when analyzing the Go-To Starting Lineup and considering who will probably be playing in the forthcoming games.
Maybe. I’ll find out if that’s an easy addition or something that we’ll have to add down the road.