Jordan in Finland (Fantasy Baseball Oligarch)
@rosenjordanblum.bsky.social
Income inequality drivers @aboakademi. ⚾✍️@fangraphs.⚾ #s OOPSY & @statlinescout & @prospectslive. OnWork workforce strategist. pet rat owner 🐀🐀
The Murakami ZiPS will play 👀
November 7, 2025 at 4:48 PM
The Murakami ZiPS will play 👀
when someone inquires about a surprising OOPSY projection
October 24, 2025 at 4:52 PM
when someone inquires about a surprising OOPSY projection
how a sabermetrician sees the world
October 20, 2025 at 2:37 PM
how a sabermetrician sees the world
Reviewing my 2025 bold predictions for
@fangraphs.com
@fangraphs.com
October 10, 2025 at 2:17 PM
Reviewing my 2025 bold predictions for
@fangraphs.com
@fangraphs.com
Left: OOPSY's biggest misses relative to the other systems. Right: OOPSY's biggest hits relative to other systems (sorted by magnitude of error relative to other systems)
October 8, 2025 at 2:33 PM
Left: OOPSY's biggest misses relative to the other systems. Right: OOPSY's biggest hits relative to other systems (sorted by magnitude of error relative to other systems)
OOPSY's top projected offenses the rest of the way (team wRC+ weighted by DC PA)
August 1, 2025 at 9:27 PM
OOPSY's top projected offenses the rest of the way (team wRC+ weighted by DC PA)
Working on adding EV90 into OOPSY as a proxy for bat speed for minor leaguers...btw, when did @fangraphs.com add EV90 for MLBers, a nice surprise! for prospects, I've been pulling EV90 from the indispensable @oriolebird.bsky.social's Prospect Savant leaderboards, I command you to follow him now!
July 17, 2025 at 11:23 AM
Working on adding EV90 into OOPSY as a proxy for bat speed for minor leaguers...btw, when did @fangraphs.com add EV90 for MLBers, a nice surprise! for prospects, I've been pulling EV90 from the indispensable @oriolebird.bsky.social's Prospect Savant leaderboards, I command you to follow him now!
Relievers have a higher ERA than starters this year. Probably just random variation and won't last, but would be a first in the statcast era
May 14, 2025 at 4:15 PM
Relievers have a higher ERA than starters this year. Probably just random variation and won't last, but would be a first in the statcast era
therapy pays off
April 10, 2025 at 1:23 PM
therapy pays off
When you decide to prepare a pastry for the potluck instead of just buying one from the store
March 12, 2025 at 10:31 PM
When you decide to prepare a pastry for the potluck instead of just buying one from the store
embarrassing
March 11, 2025 at 5:49 PM
embarrassing
top hidden SP projections (by ERA)
March 8, 2025 at 2:08 PM
top hidden SP projections (by ERA)
we're working on displaying the oopsys for all players as right now guys with 0 projected (DC) PA are not shown...here are the top 5 hidden (with 0 DC PA) wRC+ projections
March 8, 2025 at 2:04 PM
we're working on displaying the oopsys for all players as right now guys with 0 projected (DC) PA are not shown...here are the top 5 hidden (with 0 DC PA) wRC+ projections
Sent this note to OOPSY staffers today about our new ethos:
we are going to be writing every day in support and defense of two pillars: why OOPSY projections are wise and all-knowing, and why other projection systems are naive and flawed.
we are going to be writing every day in support and defense of two pillars: why OOPSY projections are wise and all-knowing, and why other projection systems are naive and flawed.
February 26, 2025 at 3:39 PM
Sent this note to OOPSY staffers today about our new ethos:
we are going to be writing every day in support and defense of two pillars: why OOPSY projections are wise and all-knowing, and why other projection systems are naive and flawed.
we are going to be writing every day in support and defense of two pillars: why OOPSY projections are wise and all-knowing, and why other projection systems are naive and flawed.
The "consensus" top 10 when averaging projections from ZiPS, Davenport, & OOPSY...top 50 in the piece!
February 19, 2025 at 2:37 PM
The "consensus" top 10 when averaging projections from ZiPS, Davenport, & OOPSY...top 50 in the piece!
Nats at 3.1% playoffs odds this year, aka, "the asteroid threshold..." but NASA isn't accounting for any midseason moves the asteroid might make
February 18, 2025 at 10:05 PM
Nats at 3.1% playoffs odds this year, aka, "the asteroid threshold..." but NASA isn't accounting for any midseason moves the asteroid might make
Top: the fantasy baseball team coming out of the draft
Bottom: the fantasy baseball team by May 1st
Bottom: the fantasy baseball team by May 1st
February 16, 2025 at 10:36 PM
Top: the fantasy baseball team coming out of the draft
Bottom: the fantasy baseball team by May 1st
Bottom: the fantasy baseball team by May 1st
average bat speed changes in 2023 & 2024 (now up on savant!)
February 12, 2025 at 1:24 PM
average bat speed changes in 2023 & 2024 (now up on savant!)
Trying this with potential university employers...why did my velocity fall off in the last year of my doctorate?
February 10, 2025 at 3:51 PM
Trying this with potential university employers...why did my velocity fall off in the last year of my doctorate?
Me after seeing multiple Luis Garcias in the player pool
February 10, 2025 at 1:49 PM
Me after seeing multiple Luis Garcias in the player pool
an annual tradition
February 9, 2025 at 11:23 PM
an annual tradition
another way of looking at it, regressing ROS 2024 wOBA on regressed hard swing % & projected ROS wOBA (DC) at the same time...similar to what was seen with the bat x, adding a measure of swing speed (this time hard swing, which appears to be a bit better of a measure than swing speed) helps
January 28, 2025 at 12:26 PM
another way of looking at it, regressing ROS 2024 wOBA on regressed hard swing % & projected ROS wOBA (DC) at the same time...similar to what was seen with the bat x, adding a measure of swing speed (this time hard swing, which appears to be a bit better of a measure than swing speed) helps
How much would regressed hard swing % (april 3-july 17) have improved ROS DC projections (for July 18th & on) in '24? Regressing the wOBA projection residual (actual wOBA minus projected wOBA) on hard swing %, a 10 percentage point increase in hard swing is associated with a 6-point increase in wOBA
January 28, 2025 at 12:22 PM
How much would regressed hard swing % (april 3-july 17) have improved ROS DC projections (for July 18th & on) in '24? Regressing the wOBA projection residual (actual wOBA minus projected wOBA) on hard swing %, a 10 percentage point increase in hard swing is associated with a 6-point increase in wOBA
poking fun at this lame-o
January 23, 2025 at 2:19 PM
poking fun at this lame-o