Neil Pierre-Louis
@pierreanalytics.com
Developer, Baseball Systems @redsox | Creator of https://www.pierreanalytics.com/ | Former UNC Baseball Analyst, SWE Intern at Google | UNC Alum (‘23)
Pinned
Neil Pierre-Louis
@pierreanalytics.com
· Nov 14
I need baseball like I need water
January 25, 2026 at 12:25 AM
I need baseball like I need water
Got my shot 12/26, got the flu 1/4, so probably not enough time for any protection but it was genuinely the worst lol
hey even if you got a flu shot, I don’t recommend getting the flu
0/10 experience rn
0/10 experience rn
January 24, 2026 at 9:48 PM
Got my shot 12/26, got the flu 1/4, so probably not enough time for any protection but it was genuinely the worst lol
Reposted by Neil Pierre-Louis
Albert Johansson’s bounceback - how the young defenseman has turned his game around over the last month
prashanthiyer.substack.com/p/albert-joh...
prashanthiyer.substack.com/p/albert-joh...
January 24, 2026 at 6:06 PM
Albert Johansson’s bounceback - how the young defenseman has turned his game around over the last month
prashanthiyer.substack.com/p/albert-joh...
prashanthiyer.substack.com/p/albert-joh...
Wow lol
Jake Sanderson post-game about the team’s goaltending tonight.
“I think Leevi(Merilainen) made some good saves. But I think at the end of the day, you got to make more than 10 saves to win a game.”
“I think Leevi(Merilainen) made some good saves. But I think at the end of the day, you got to make more than 10 saves to win a game.”
January 18, 2026 at 8:22 AM
Wow lol
NEW WEBSITE UPDATE:
- Exponential decay RAPM charts are now updated
- New assist plots are up with video. These are calculated using the NHL puck/player tracking API (available for goals only)
- Fixed some bugs. Utah players are back now. MTL logos appear on video page
- Exponential decay RAPM charts are now updated
- New assist plots are up with video. These are calculated using the NHL puck/player tracking API (available for goals only)
- Fixed some bugs. Utah players are back now. MTL logos appear on video page
January 15, 2026 at 3:02 PM
NEW WEBSITE UPDATE:
- Exponential decay RAPM charts are now updated
- New assist plots are up with video. These are calculated using the NHL puck/player tracking API (available for goals only)
- Fixed some bugs. Utah players are back now. MTL logos appear on video page
- Exponential decay RAPM charts are now updated
- New assist plots are up with video. These are calculated using the NHL puck/player tracking API (available for goals only)
- Fixed some bugs. Utah players are back now. MTL logos appear on video page
Saw some good puck last night (BU vs Harvard)
January 13, 2026 at 5:11 PM
Saw some good puck last night (BU vs Harvard)
Coming soon to the website...
Obviously a lot to flesh out but would be cool to add some more metadata to that tooltip...maybe even shot velo? Gotta also figure out a way to do full rink stuff + make the tooltip not block the passing animations
Obviously a lot to flesh out but would be cool to add some more metadata to that tooltip...maybe even shot velo? Gotta also figure out a way to do full rink stuff + make the tooltip not block the passing animations
January 5, 2026 at 3:01 PM
Coming soon to the website...
Obviously a lot to flesh out but would be cool to add some more metadata to that tooltip...maybe even shot velo? Gotta also figure out a way to do full rink stuff + make the tooltip not block the passing animations
Obviously a lot to flesh out but would be cool to add some more metadata to that tooltip...maybe even shot velo? Gotta also figure out a way to do full rink stuff + make the tooltip not block the passing animations
1/4 xG Differential Plots (5v5)
Leaders:
Avalanche: +28.51
Hurricanes: +21.64
Senators: +14.01
Mammoth: +11.35
Leaders:
Avalanche: +28.51
Hurricanes: +21.64
Senators: +14.01
Mammoth: +11.35
January 4, 2026 at 11:19 PM
1/4 xG Differential Plots (5v5)
Leaders:
Avalanche: +28.51
Hurricanes: +21.64
Senators: +14.01
Mammoth: +11.35
Leaders:
Avalanche: +28.51
Hurricanes: +21.64
Senators: +14.01
Mammoth: +11.35
Another. Which I feel like the defensive player in this clip should get credit for the stick check here yet
January 2, 2026 at 8:15 PM
Another. Which I feel like the defensive player in this clip should get credit for the stick check here yet
Reposted by Neil Pierre-Louis
Gonna promote my own thing here: open.substack.com/pub/puckover...
A Brief History of NHL Play-by-Play Data
Or, What I Learned About the RTSS by Writing My Own NHL Play-by-Play Scraper
open.substack.com
January 2, 2026 at 5:42 AM
Gonna promote my own thing here: open.substack.com/pub/puckover...
If we get a “slow == bad” reasoning for Jason Robertson not making the Olympics in the big year of 2026…god help us all bro. I just genuinely cannot see an argument for leaving him off that I would take seriously
December 30, 2025 at 4:46 PM
If we get a “slow == bad” reasoning for Jason Robertson not making the Olympics in the big year of 2026…god help us all bro. I just genuinely cannot see an argument for leaving him off that I would take seriously
Reposted by Neil Pierre-Louis
I am a good person, so I want America to lose forever, but if they leave Jason Robertson at home for the olympics I think professional duty will compel me to commit a sequence of crimes.
December 12, 2025 at 1:31 AM
I am a good person, so I want America to lose forever, but if they leave Jason Robertson at home for the olympics I think professional duty will compel me to commit a sequence of crimes.
An absolute joke.
Obviously @russohockey.bsky.social already has had the big well-reported story on the likely USA roster from earlier this month. But the feeling from talking to some Stars people is that Jason Robertson is still on the outside of the USA Olympic roster.
December 30, 2025 at 4:07 PM
An absolute joke.
Reposted by Neil Pierre-Louis
Moritz Seider for MVP. I’m gonna keep saying it
December 21, 2025 at 8:55 PM
Moritz Seider for MVP. I’m gonna keep saying it
Primary Assist heatmaps for 2024-2025 season as well as current, based on strength. Pretty cool stuff happening on the powerplay and one of the reasons why xG models (publicly) are so much less accurate for that strength
December 21, 2025 at 1:22 AM
Primary Assist heatmaps for 2024-2025 season as well as current, based on strength. Pretty cool stuff happening on the powerplay and one of the reasons why xG models (publicly) are so much less accurate for that strength
Coming soon to the site...as well as some other stuff
Blue is where the puck carrier releases the puck, red is where the shot happens
Blue is where the puck carrier releases the puck, red is where the shot happens
December 20, 2025 at 7:50 PM
Coming soon to the site...as well as some other stuff
Blue is where the puck carrier releases the puck, red is where the shot happens
Blue is where the puck carrier releases the puck, red is where the shot happens
Reposted by Neil Pierre-Louis
New post: what predicts future future goal differential the best? What about offense? Defense? Revisiting an old research idea with data from the chip era
open.substack.com/pub/puckover...
open.substack.com/pub/puckover...
Which Is Better at Predicting Future Goals: Corsi, Expected Goals, or Scoring Chances?
Revisiting an old topic with new data
open.substack.com
December 19, 2025 at 9:05 PM
New post: what predicts future future goal differential the best? What about offense? Defense? Revisiting an old research idea with data from the chip era
open.substack.com/pub/puckover...
open.substack.com/pub/puckover...
Y’all have any advice for writer’s/research block in regards to sports stuff? I feel like the last month or so I genuinely just have no clue what to delve into and it’s driving me insane. Usually it’ll just be something that I notice from watching games but literally nothing has popped into my head
December 8, 2025 at 2:49 AM
Y’all have any advice for writer’s/research block in regards to sports stuff? I feel like the last month or so I genuinely just have no clue what to delve into and it’s driving me insane. Usually it’ll just be something that I notice from watching games but literally nothing has popped into my head
Reposted by Neil Pierre-Louis
November 12, 2025 at 4:40 PM
Reposted by Neil Pierre-Louis
Minor site update: coach measurements for 25-26 are up at hockeyviz.com/coaches (you can also use the link in the Tools menu; you will need a Basic subscription in either case).
October 27, 2025 at 7:45 PM
Minor site update: coach measurements for 25-26 are up at hockeyviz.com/coaches (you can also use the link in the Tools menu; you will need a Basic subscription in either case).
Wrote a piece on sample size and reliability in the NHL. Check it out:
medium.com/@neilpierre2...
medium.com/@neilpierre2...
October 27, 2025 at 4:45 PM
Wrote a piece on sample size and reliability in the NHL. Check it out:
medium.com/@neilpierre2...
medium.com/@neilpierre2...