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
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...
Another reason why I’m grateful for Git
October 22, 2025 at 4:26 PM
Another reason why I’m grateful for Git
Coming to the website soon as an interactive comparison tool
October 8, 2025 at 12:44 AM
Coming to the website soon as an interactive comparison tool
Reposted by Neil Pierre-Louis
⬡⬢⬡ HockeyViz 2025-2026 Season Preview ⬢⬡⬢
hockeyviz.com/txt/preview2...
Detailed skill and icetime breakdowns for every team, and a million simulations of the upcoming NHL seasons.
There are many, many graphs.
hockeyviz.com/txt/preview2...
Detailed skill and icetime breakdowns for every team, and a million simulations of the upcoming NHL seasons.
There are many, many graphs.
September 29, 2025 at 12:17 PM
⬡⬢⬡ HockeyViz 2025-2026 Season Preview ⬢⬡⬢
hockeyviz.com/txt/preview2...
Detailed skill and icetime breakdowns for every team, and a million simulations of the upcoming NHL seasons.
There are many, many graphs.
hockeyviz.com/txt/preview2...
Detailed skill and icetime breakdowns for every team, and a million simulations of the upcoming NHL seasons.
There are many, many graphs.
Great thread.
⬡⬢⬡ New Model at HockeyViz ⬡⬢⬡
This year's new version of my model for estimating player impacts on 5v5 chance rates.
Read all the details here: hockeyviz.com/txt/magnus9EV
This year's new version of my model for estimating player impacts on 5v5 chance rates.
Read all the details here: hockeyviz.com/txt/magnus9EV
August 27, 2025 at 10:33 PM
Great thread.
Walked 1 minute to the dentist this morning. Cities are so undefeated
I think about this every single day as I drop my kids off to one of their various local summer camps that they love and then walk to the train that costs me less than $3 to read while being delivered directly into my office building
cities can suck, cities aren't for everyone
and also they rule
cities can suck, cities aren't for everyone
and also they rule
We need to build some real social stigma around being afraid of cities. You don't have to like them or live there, but a politics built this strongly around watching TV and going "ewww" is embarrassing, and people should be embarrassed by it. It's like "fear of werewolves" being your top issue.
August 12, 2025 at 3:06 PM
Walked 1 minute to the dentist this morning. Cities are so undefeated
Reposted by Neil Pierre-Louis
half the posts I read about claude code lately are like "if you spend 90 minutes crafting the perfect prompt, claude.md file, generate the right subagents, then you can magically save yourself 20 minutes of work!"
July 29, 2025 at 4:55 PM
half the posts I read about claude code lately are like "if you spend 90 minutes crafting the perfect prompt, claude.md file, generate the right subagents, then you can magically save yourself 20 minutes of work!"
Reposted by Neil Pierre-Louis
Nik Ehlers (6x8.5m with Carolina) is a tremendous generator and finisher of offence, especially at 5v5, average defensively, strongly impacts his team's penalty differential. An extremely team-friendly deal.
July 3, 2025 at 7:02 PM
Nik Ehlers (6x8.5m with Carolina) is a tremendous generator and finisher of offence, especially at 5v5, average defensively, strongly impacts his team's penalty differential. An extremely team-friendly deal.
New xG models should be on my website by the end of next week. Will also have data starting from the 2010-2011 season. Know I’ve been teasing the matchups write up but needed to do this first to address some bad data cleaning/pipelining, weird goalie GSAx values, and accuracy
June 12, 2025 at 3:58 AM
New xG models should be on my website by the end of next week. Will also have data starting from the 2010-2011 season. Know I’ve been teasing the matchups write up but needed to do this first to address some bad data cleaning/pipelining, weird goalie GSAx values, and accuracy
Reposted by Neil Pierre-Louis
New xG Model at HockeyViz: Magnus 8
hockeyviz.com/txt/xg8
Measuring shot quality, shooter quality, goalie quality, and the structural factors that affect them.
hockeyviz.com/txt/xg8
Measuring shot quality, shooter quality, goalie quality, and the structural factors that affect them.
May 26, 2025 at 1:08 PM
New xG Model at HockeyViz: Magnus 8
hockeyviz.com/txt/xg8
Measuring shot quality, shooter quality, goalie quality, and the structural factors that affect them.
hockeyviz.com/txt/xg8
Measuring shot quality, shooter quality, goalie quality, and the structural factors that affect them.
Reposted by Neil Pierre-Louis
I saw this from @pierreanalytics.com over at the other place, but since he hardly posts here, wanted the Bsky folks to see it too:
Andrei Svechnikov NHL Edge skating stats in 2021-2022 (left, pre-ACL surgery) vs 2024-2025 (right). It's the percentile column that should jump out.
Andrei Svechnikov NHL Edge skating stats in 2021-2022 (left, pre-ACL surgery) vs 2024-2025 (right). It's the percentile column that should jump out.
April 15, 2025 at 3:00 PM
I saw this from @pierreanalytics.com over at the other place, but since he hardly posts here, wanted the Bsky folks to see it too:
Andrei Svechnikov NHL Edge skating stats in 2021-2022 (left, pre-ACL surgery) vs 2024-2025 (right). It's the percentile column that should jump out.
Andrei Svechnikov NHL Edge skating stats in 2021-2022 (left, pre-ACL surgery) vs 2024-2025 (right). It's the percentile column that should jump out.
Happy opening day!
March 27, 2025 at 6:34 PM
Happy opening day!
Reposted by Neil Pierre-Louis
Reposted by Neil Pierre-Louis
Caps suck ass in the 1st, win 4-2 with an Alex Ovechkin ENG vibes to this game
March 9, 2025 at 8:11 PM
Caps suck ass in the 1st, win 4-2 with an Alex Ovechkin ENG vibes to this game
@hockeyviz.com Thoughts on Stankoven with the Canes?
March 8, 2025 at 5:57 PM
@hockeyviz.com Thoughts on Stankoven with the Canes?
That was awesome. Very gutted about the result but what a game. Happy for all of my Canadian friends ❤️❤️
February 21, 2025 at 6:14 AM
That was awesome. Very gutted about the result but what a game. Happy for all of my Canadian friends ❤️❤️
Sorry new post with links that are not broken lol
jobs.lever.co/redsox/829a2...
jobs.lever.co/redsox/db985...
jobs.lever.co/redsox/2a67a...
jobs.lever.co/redsox/829a2...
jobs.lever.co/redsox/db985...
jobs.lever.co/redsox/2a67a...
February 2, 2025 at 2:46 PM
Sorry new post with links that are not broken lol
jobs.lever.co/redsox/829a2...
jobs.lever.co/redsox/db985...
jobs.lever.co/redsox/2a67a...
jobs.lever.co/redsox/829a2...
jobs.lever.co/redsox/db985...
jobs.lever.co/redsox/2a67a...
Come work with me and some talented engineers on the Baseball Systems team here at the Boston Red Sox. DM me if you have questions
jobs.lever.co/redsox/829a292…
jobs.lever.co/redsox/db98506
jobs.lever.co/redsox/2a67a03
jobs.lever.co/redsox/829a292…
jobs.lever.co/redsox/db98506
jobs.lever.co/redsox/2a67a03
https://jobs.lever.co/redsox/829a292…
February 1, 2025 at 7:39 PM
Come work with me and some talented engineers on the Baseball Systems team here at the Boston Red Sox. DM me if you have questions
jobs.lever.co/redsox/829a292…
jobs.lever.co/redsox/db98506
jobs.lever.co/redsox/2a67a03
jobs.lever.co/redsox/829a292…
jobs.lever.co/redsox/db98506
jobs.lever.co/redsox/2a67a03
Reposted by Neil Pierre-Louis
For the second time in three days, I just order an iced coffee in sub-freezing weather. I feel the Massachusetts running through my veins.
January 4, 2025 at 4:04 PM
For the second time in three days, I just order an iced coffee in sub-freezing weather. I feel the Massachusetts running through my veins.
Can’t emphasize this enough
That's my top recommendation to saberists as well... publish your work, and host it where it's associated to you
Should You Create a Portfolio Website for Your Journalism?
Here's an excellent post from @ryanbeckwith.bsky.social that answers so many of your questions, even for us freelancers! With resources, too!
yourfirstbyline.substack.com/p/journalism...
Here's an excellent post from @ryanbeckwith.bsky.social that answers so many of your questions, even for us freelancers! With resources, too!
yourfirstbyline.substack.com/p/journalism...
December 29, 2024 at 3:25 PM
Can’t emphasize this enough
I simulated 10,000 of Connor Bedard's shots on goal with his probabilities and compared it with his actual output so far this season. Any requests?
December 13, 2024 at 9:49 PM
I simulated 10,000 of Connor Bedard's shots on goal with his probabilities and compared it with his actual output so far this season. Any requests?