Justin Choi 🇰🇷 @justinochoi Twitter profile

Last Seen Profiles

@yuntaechan

@AndMorris21

@gyuuhigatabetai

@MuayadKafesha

@charismaakapoor

@Crossover_bs

@digitalairair

@yurarosa

@BrittWadman

@DingityDingus

@clueyelsa

@ruffledgloves

@500Indy1911

@McReadier

@culturaquito

@Carrillo_Gil

@pott95

@khldds

@aaron_jp_crew

@hammyXBT

@stw_pdg

@rbressane

@stw_pdg

@efeatherston

@braden_a_d

@511029gnod

@jmurffff

@CowokSukaJilmek

@sbuhlana

@louisessbm

@CelerNetwork

@CianGormley

@_aherd74

@w72ht

@VmaniakJ

@kadriyealtuntop

Justin Choi 🇰🇷

@justinochoi

4 months

Cool that we're gonna get to see the first ever 40 HR / 40 RBI season!

Brent Maguire

@bmags94

4 months

Mike Trout's second home run of the day was an absolute blast to tie the game. It left his bat at 113.1 mph and traveled 473 feet (!!!).

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Justin Choi 🇰🇷

@justinochoi

3 years

Remember when Yermín Mercedes was the best hitter in MLB for exactly a month?

Céspedes Family BBQ

@CespedesBBQ

3 years

BOMBAAAAA YERMÍÍÍÍN

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Justin Choi 🇰🇷

@justinochoi

3 years

Choo ends his MLB career with an OBP equal to that of Albert Pujols, Derek Jeter, and Mike Piazza: .377. A massively underrated paragon of discipline and consistency.

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Justin Choi 🇰🇷

@justinochoi

2 years

Mariners fans: I wish we get to see a ton of postseason baseball at home! *monkey's paw curls*

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Justin Choi 🇰🇷

@justinochoi

4 years

Here's a very cool image of Hank Aaron taking a few swings with the Samsung Lions in the KBO's inaugural season, in 1982. RIP to a man who truly loved baseball:

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Justin Choi 🇰🇷

@justinochoi

3 years

After an 0-for-14 skid, Choo clobbered a ball for his first KBO hit!

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Justin Choi 🇰🇷

@justinochoi

4 years

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Justin Choi 🇰🇷

@justinochoi

3 years

Been waiting a while to say this: I've accepted an offer to become a contributor at FanGraphs! Super excited to fulfill a dream and collaborate with a bunch of awesome people.

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Justin Choi 🇰🇷

@justinochoi

2 years

Dae-ho Lee is leading the KBO in batting average (.353). He just turned 40 today, and this is his final season. What a swan song so far.

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Justin Choi 🇰🇷

@justinochoi

2 years

Personal news: I've decided to step away from FanGraphs. To anyone who offered encouragement, advice, or simply read my work over the last two years, I can't say thank you enough. You can still find me here, but I won't be writing about baseball for a while.

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Justin Choi 🇰🇷

@justinochoi

3 years

There have been 7 official no-hitters this year but just 1 Maddux (Márquez today), which is a great summary of 2021 so far.

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Justin Choi 🇰🇷

@justinochoi

4 years

Game 1 Astros: .319 xBA Rays: .189 xBA Game 2 Astros: .357 xBA Rays: .167 xBA Game 3 Astros: .265 xBA Rays: .216 xBA The Astros are 0-3 in this series.

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Justin Choi 🇰🇷

@justinochoi

3 years

Top 10 Dynasty Rankings 🔥 1. Han 2. Tang 3. Gupta 4. Song 5. Ming 6. Qing 7. Maurya 8. Shang 9. Xia 10. Duck

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Justin Choi 🇰🇷

@justinochoi

4 years

This is now one of my favorite photos, ever:

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Justin Choi 🇰🇷

@justinochoi

3 years

The Mariners offense this season in... High Leverage: 133 wRC+ (1st) Medium Leverage: 98 wRC+ (16th) Low Leverage: 79 wRC+ (29th)

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Justin Choi 🇰🇷

@justinochoi

3 years

Guess who's on fire? Shin-Soo Choo, with the first multi-HR game of his KBO career:

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Justin Choi 🇰🇷

@justinochoi

3 years

Players who are in the 85th percentile or above in Max EV, Sprint Speed, and Outs Above Average: Byron Buxton Tommy Edman HA-SEONG KIM

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Justin Choi 🇰🇷

@justinochoi

2 years

Man can you imagine Soto's defense and Maldonado's bat in one player? He'd be the WOAT

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Justin Choi 🇰🇷

@justinochoi

3 years

Corey Seager is going to have a .330/.400/.650 Bryce Harper-type season and nobody will stand in his way

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Justin Choi 🇰🇷

@justinochoi

4 years

Here's a fun one. Highest whiff rate on 4SFB in 2020 (min. 100): 1. _____________ 2. Trevor May - 46.9% 3. Yu Darvish - 42.3% 4. Aroldis Chapman - 42.0% 5. Edwin Diaz - 41.1% No cheating!

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Justin Choi 🇰🇷

@justinochoi

4 years

Made my first plot in R studio today. It ain't much, but it's honest work:

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Justin Choi 🇰🇷

@justinochoi

3 years

Omg thanks MLB for clarifying that he's not a home run hitter. With this crucial info I shall click on this video immediately and boost those engagement numbers

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Justin Choi 🇰🇷

@justinochoi

2 years

Everyone's freaking out about Freeman but I wanna know what's up with Story

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Justin Choi 🇰🇷

@justinochoi

3 years

For April Fools FanGraphs should add bOFA+ but only to Aubrey Huff's page

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Justin Choi 🇰🇷

@justinochoi

3 years

Congrats to the KT Wiz, who just won their first Korean Series title in team history. They were a deadly crew of incredible pitching depth, veteran hitters, and one Baek-ho Kang.

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Justin Choi 🇰🇷

@justinochoi

4 years

There may be 100,000 parallel universes to ours, and in none of them is Trevor Bauer worth a $40 mil AAV

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Justin Choi 🇰🇷

@justinochoi

4 years

Gary Sánchez saw 55 middle-middle pitches in 2020. He did not record a single hit off them.

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Justin Choi 🇰🇷

@justinochoi

1 year

Derek Jeter every time he got a routine grounder to short:

MLB

@MLB

1 year

Pitchers are DEFINITELY athletes. 😱

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Justin Choi 🇰🇷

@justinochoi

3 years

dave cameron from 13 years ago hit the nail on the head

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Justin Choi 🇰🇷

@justinochoi

2 years

Mike Tauchman is hitting .478/.500/.739 in six KBO games. He also leads the league in WAR, with 0.95. Microscopic samples are fun.

Céspedes Family BBQ

@CespedesBBQ

2 years

if the Yankees don't extend Judge soon they might wake up one day and see him THRIVING FOR THE HANWHA EAGLES

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Justin Choi 🇰🇷

@justinochoi

9 months

@jaseidler

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Justin Choi 🇰🇷

@justinochoi

3 years

Just your average 34-year-old catcher who skipped an entire season

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Justin Choi 🇰🇷

@justinochoi

3 years

I see your Nelson Cruz and raise you one Dae Ho Lee.

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Justin Choi 🇰🇷

@justinochoi

4 years

I turned 20 and ate some cake. Also baked cookies, because why not

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Justin Choi 🇰🇷

@justinochoi

3 years

Jansen just got three whiffs from this guy. Wow.

Justin Choi 🇰🇷

@justinochoi

3 years

So among all 186 qualified hitters, Jake Cronenworth's SwStr% of 0.4% is the lowest. He's always been a patient thumper, but that's amazing.

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Justin Choi 🇰🇷

@justinochoi

2 years

So the Blue Jays in 2022.. C: Kirk/Jansen/Moreno 1B: Vladdy Jr. 2B: Biggio SS: Bichette 3B: Chapman LF: Gurriel Jr. CF: Springer RF: Grichuk DH: Teoscar Hernandez lordy

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Justin Choi 🇰🇷

@justinochoi

2 years

These are the reactions that I write for

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Justin Choi 🇰🇷

@justinochoi

3 years

Can a breakout star get even better? Maybe, and Max Muncy is on his way to prove yes. My latest for @fangraphs :

Max Muncy Might Be the Best Version of Himself

One of the best hitters in baseball is making improvements.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

4 years

With all this talk about old school vs. new school, I'm wondering what the reaction was to Babe Ruth. Bet some old Civil War veteran was grumbling for a return to precise hitting and underhand pitching.

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Justin Choi 🇰🇷

@justinochoi

3 years

Mini announcement: Starting tomorrow, I’ll be at boot camp for ~2 months as part of my military service. Will be back afterwards, but until then, that means no internet. So make sure to enjoy all the remaining baseball this year for me! This is just an IL stint. 🙂

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Justin Choi 🇰🇷

@justinochoi

3 years

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Justin Choi 🇰🇷

@justinochoi

1 year

I get that Ohtani is important but maybe you should, I don't know, talk about the All-Star on the mound and how he's evolved as a pitcher since joining the Giants

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Justin Choi 🇰🇷

@justinochoi

3 years

The Mariners won 90 games? The Padres finished UNDER .500?

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Justin Choi 🇰🇷

@justinochoi

3 years

My debut article for @fangraphs ! It has a fan (me) and it has a graph (a scatterplot). Check it out:

Jack Leiter’s Fastball Exemplifies His Talent

What the latest in pitching analytics tell us about a single pitch.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

10 months

Analytics in baseball flourished precisely because the sport is so prone to variance. You can't blame analytics for ruining baseball. They explain the exact reason that 100-win teams sometimes end up losing in the NLDS.

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Justin Choi 🇰🇷

@justinochoi

4 years

Bohemian Rapsodo

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Justin Choi 🇰🇷

@justinochoi

4 years

Like the dab, the fly ball revolution is soooooo 2015. Let me introduce you to the new, hip thing: the (oppo) groundball revolution.

Who Should Join the (Oppo) Groundball Revolution?

Hitting ground balls the opposite way might be the new cool thing.

justinochoi.medium.com

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Justin Choi 🇰🇷

@justinochoi

2 years

Who else's downloads also look like this

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Justin Choi 🇰🇷

@justinochoi

3 years

Highest swinging-strike rate on down-the-middle pitches (min. 100) 1. ALEX VESIA – 27.4% 2. Enyel De Los Santos – 23.0% 3. J.P. Feyereisen – 21.9% 4. Devin Williams – 21.8% 5. Sam Howard – 21.5%

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Justin Choi 🇰🇷

@justinochoi

4 years

I have absolutely no sympathy for people who whine about The Athletic's paywall when just a few weeks ago they had a $1/m deal. Arguably the best baseball content available.

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Justin Choi 🇰🇷

@justinochoi

1 year

You know all those hypotheticals about whether 80-grade command can compensate for a 90 mph fastball velo? Kirby has that 80-grade command. But also, Kirby throws 95-97. Also also, if he threw 90, he would get shelled.

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Justin Choi 🇰🇷

@justinochoi

3 years

Adolis García's spray chart is a thing of beauty

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Justin Choi 🇰🇷

@justinochoi

2 years

hey it's me

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Justin Choi 🇰🇷

@justinochoi

2 years

Friendship ended with Alejandro Kirk, now Cal Raleigh is my best friend

FanGraphs Baseball

@fangraphs

2 years

Cal Raleigh Has Helped Save the Mariners

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Justin Choi 🇰🇷

@justinochoi

1 year

Guess who's a civilian now

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Justin Choi 🇰🇷

@justinochoi

10 months

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Justin Choi 🇰🇷

@justinochoi

2 years

Julio deserves better:

Somebody Save Julio Rodríguez

The Mariners’ phenom is struggling to begin his MLB career, but it’s not entirely his fault.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

9 months

Corey Seager has the best approach at the plate of any players in the majors

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Justin Choi 🇰🇷

@justinochoi

3 years

95+ mph pitches account for just 10.5% of HBP this season. To equate throwing harder with more HBP seems a tad misleading, and there's no discussion about how increased reliance on breaking pitches is a factor.

Ken Rosenthal

@Ken_Rosenthal

3 years

A disturbing trend emerges: Pitchers are throwing harder than ever with less command. Column:

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Justin Choi 🇰🇷

@justinochoi

4 years

Baseball Twitter in the past 24 hours

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Justin Choi 🇰🇷

@justinochoi

1 year

Just when I thought Spencer Strider couldn't be any cooler, he talked about a proprietary pitching formula in an interview, which of course I had to cover:

Deciphering the Braves’ Super Secret Pitching Formula

Spencer Strider dropped a few nuggets of information in a recent interview that couldn’t go unnoticed.

link.medium.com

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Justin Choi 🇰🇷

@justinochoi

3 years

@MLBRandomStats "Has launch angle been grossly overhyped" is one of the worst sentences I've read

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Justin Choi 🇰🇷

@justinochoi

1 month

Wanted to find out if the number of pitches in a pitcher's arsenal had a significant effect on the infamous times-through-order penalty but... yeah lol. Gotta publish the null results, too

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Justin Choi 🇰🇷

@justinochoi

3 years

Since his debut in 2008, Kershaw has thrown 666 curveballs in 0-2 counts. Two resulted in a home run. One of them belongs to Ha-Seong Kim. 👑 (h/t @DanielKimW )

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Justin Choi 🇰🇷

@justinochoi

3 years

This is one of the wildest graphs I've ever seen on a baseball site:

Alex Fast

@AlexFast8

3 years

@justinochoi Lance McCullers in that SL usage is preposterous.

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Justin Choi 🇰🇷

@justinochoi

3 years

I'm sad so many people are lamenting the state of MLB before even congratulating Turnbull so I decided to honor him. Latest for @fangraphs :

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Justin Choi 🇰🇷

@justinochoi

4 years

Edwin Ríos so far is Joey Gallo with a higher contact rate, and I absolutely want to see a full season from him.

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Justin Choi 🇰🇷

@justinochoi

3 years

🚨 Shohei Ohtani has passed the 7 WAR mark 🚨

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Justin Choi 🇰🇷

@justinochoi

2 years

Narrator: Musgrove did not, in fact, figure out the third time through the order

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Justin Choi 🇰🇷

@justinochoi

4 years

A lot of jabronis think that once they learn a bit of R they'll become a better analyst. Shit don't matter if you don't understand the math behind it. That's why I'm starting a new project, Bayesian or Die. LFG

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Justin Choi 🇰🇷

@justinochoi

3 years

"Hey everyone, these accounts are must-follows!" *proceeds to list the 10 most popular people on baseball twitter*

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Justin Choi 🇰🇷

@justinochoi

1 year

When was the last time you thought about the sinker? If your answer is something like, "Uh, I don't know, maybe never," then you should read this:

The Sinker Continues To Be Optimized

The sinker is better than ever this season — for a subtle but surprising reason.

justinochoi.medium.com

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Justin Choi 🇰🇷

@justinochoi

6 months

@NotTheBobbyOrr oh yeah saw this in a intro to macroeconomics textbooks once

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Justin Choi 🇰🇷

@justinochoi

3 years

Just read some batted ball research conducted pre-Statcast and wow do we have it good now

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Justin Choi 🇰🇷

@justinochoi

2 years

Damn I love the FanGraphs Depth Charts

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Justin Choi 🇰🇷

@justinochoi

4 years

Interesting development: Walker Buehler continues to decrease his rel. height + increase extension on FB. Helps w/ flattening VAA, thus better viability up in the zone. Rich get richer.

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Justin Choi 🇰🇷

@justinochoi

3 years

Think this is my favorite baseball snapshot from the 2021 season

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Justin Choi 🇰🇷

@justinochoi

4 years

Assuming... 1) Depth Charts 2.2 WAR projection = mean 2) Normal distribution 3) 1 WAR = $8 mil There's roughly a 90% prob. that Ha-Seong Kim is 'worth' his AAV in 2021:

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Justin Choi 🇰🇷

@justinochoi

2 years

Got all meta for @fangraphs and wrote about re-thinking Jack Leiter's college numbers, representing pitch movement, and making up for statistical mishaps:

Confessions of a Baseball Analytics Writer

Grappling with instances where interpreting the data isn’t as straightforward as it seemed.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

3 years

Over 95% of the Padres' shifts have been against LHH this season. That's weird! For @fangraphs , I investigated why:

No Team Is Shifting Like the Padres

When it comes to infield shifts, the Padres stand out in multiple ways.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

3 years

Looks like ex-Kia Tigers pitcher Aaron Brooks is joining the Padres:

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Justin Choi 🇰🇷

@justinochoi

3 years

Why is Alonso's meaningless optimism valued over Stroman's honesty and vulnerability?

Tim Healey

@timbhealey

3 years

Marcus Stroman’s numbers last night: seven innings, three runs, 114 pitches, nine retweets of personal highlights within 25 minutes of the game ending.

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Justin Choi 🇰🇷

@justinochoi

2 years

Zack Greinke is amazing

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Justin Choi 🇰🇷

@justinochoi

3 years

Done with my first year of college!

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Justin Choi 🇰🇷

@justinochoi

3 years

There's a serious lack of Korean cuisine on this site, so here's some beautiful, homemade kimchi fried rice

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Justin Choi 🇰🇷

@justinochoi

4 years

Christian Yelich in 2020: 112 wRC+ Christian Yelich in 2020, if you ignore the first 6 games he played: 133 wRC+

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Justin Choi 🇰🇷

@justinochoi

2 years

Wrote about Alejandro Kirk for @fangraphs , who's quickly becoming my favorite catcher to watch:

Alejandro Kirk Isn’t Your Average Catcher

“What if Freddie Freeman was 5-foot-8 and knew how to operate a PitchCom device?”…

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

3 years

New @fangraphs – wrote about the adjustments pitchers have made against Yelich and how he should respond. This also has some game theory, for anyone interested!

There’s a New Old Book on Christian Yelich

Pitchers are throwing more strikes against the Brewers’ slugger, who remains more like his passive 2020 self.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

3 years

Guess who's fully vaxxed

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Justin Choi 🇰🇷

@justinochoi

3 years

The world when defensive metrics are finally sorted out

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Justin Choi 🇰🇷

@justinochoi

3 years

Ah shi- Well, good to be back!

Justin Choi 🇰🇷

@justinochoi

3 years

Would love the Dodgers to win of course, but I'll be bold and say Rays vs. Brewers for the WS. It's possible, and it'll also make Manfred foam at the mouth

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Justin Choi 🇰🇷

@justinochoi

8 months

We're witnessing Schrödinger's plane, in which Ohtani simultaneously is or isn't on board until it lands

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Justin Choi 🇰🇷

@justinochoi

3 years

Thinking about when we got a glimpse of the Dodgers' internal data during the WS

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Justin Choi 🇰🇷

@justinochoi

3 years

@TheActualJCole @enosarris By winning a gold medal in 2010 the government gave him an exemption from service

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Justin Choi 🇰🇷

@justinochoi

3 years

🚨 Shohei Ohtani has passed the 8 WAR mark 🚨

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Justin Choi 🇰🇷

@justinochoi

3 years

Why do the Dodgers shift so often against RHH? There's (maybe) a reason, one that's pitching-related, which I wrote down at @fangraphs :

The Dodgers Might Have a Shifting Strategy of Their Own

Unlike usual, it involves pitching a certain way to hitters.

blogs.fangraphs.com

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Justin Choi 🇰🇷

@justinochoi

2 years

What I like about the Dodgers is that they didn't try to force the sweeper on Heaney, instead landing on a different yet still effective breaking ball shape. Player dev/coaching goals can and should be flexible

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Justin Choi 🇰🇷

@justinochoi

1 year

Hey everyone, I'm going to write about baseball again on my old blog. There's no fixed schedule – just whenever I feel like it. We'll see how this goes!

Taylor Rogers Has (Almost) Figured It Out

The new Giant experienced severe command woes in April, but they’re on the cusp of disappearing for good as the calendar flips to June.

link.medium.com

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Justin Choi 🇰🇷

@justinochoi

3 years

Some things I've learned while researching pitchers: - Cutters are exceptionally average - Location > Stuff w/r/t to wOBAcon - But the two combined produce the best results - More velo = lower LA for all pitch types except curveballs

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Justin Choi 🇰🇷

@justinochoi

3 years

behold, the esteemed FG comments section

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