@BaseballRstats

Analyzing Baseball Data with R - Book: http://t.co/LV2braxHlX Blog: http://t.co/KuBisCuRLj

Joined November 2013
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Was Ty Cobb Ever a True .400 Hitter? baseballwithr.wordpress.com/…

Was Ty Cobb Ever a True .400 Hitter? (A Tribute to Carl Morris)

Introduction I was saddened to learn about Professor Carl Morris’ recent passing. Carl was a great statistician famous for his groundbreaking work in empirical/hierarchical Bayesian modeling.…

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What stats are important from the viewpoint of a player? baseballwithr.wordpress.com/…

What stats are important from the viewpoint of a player?

By Bennett Jacobs Note from Jim Albert Hugo Mentors is a mentorship program that connects a high school student with a professor in the student’s area of interest. Bennett was interested in l…

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A Shiny App to Explore Home Run Rates baseballwithr.wordpress.com/…

A Shiny App to Explore Home Run Rates

Introduction As many baseball fans know, home run hitting hit a peak during the 2019 season when 1.39 (on average) home runs were hit by each team per game. Home run hitting in the 2021 season drop…

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Cluster Luck Scoring in 2022 Season baseballwithr.wordpress.com/…

Cluster Luck Scoring in 2022 Season

Introduction Baseball fans are familiar with the clustering aspect of run scoring. To score runs, a team must cluster a number of on-base events during particular innings. A team won’t score …

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2023 Home Run Hitting — An Early Look baseballwithr.wordpress.com/…

2023 Home Run Hitting — An Early Look

In-Play Home Run Rates During the Statcast Era Today (April 18, 2023), we have seen 19 days of 2023 MLB baseball, roughly one tenth of the season. What can we say about home run hitting in 2023? Fi…

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Game-Time Temperature and Home Runs baseballwithr.wordpress.com/…

Game-Time Temperature and Home Runs

Introduction There is an interesting paper “Global warming, home runs, and the future of America’s pastime” by Callahan, Dominy, DeSilva and Mankin recently accepted for publicati…

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Learning to Code with R using ChatGPT baseballwithr.wordpress.com/…

Learning to Code with R using ChatGPT

Introduction Recently there has been much attention to the availability of artificial intelligence (AI) chatbots such as ChatGPT. This program is currently free to try for anyone who is interested.…

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Streaky Rhys Hoskins? baseballwithr.wordpress.com/…

Streaky Rhys Hoskins?

Introduction The Phillies had some sad news last week. Rhys Hoskins, one of their most popular players, had an ACL injury during a spring training game that will keep him out of the 2023 season. Ho…

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Pitch Value Visualizations of Leaders in Statcast Era baseballwithr.wordpress.com/…

Pitch Value Visualizations of Leaders in Statcast Era

Introduction In several posts in 2021, I displayed graphs of smoothed pitch values about the zone. Basically, a pitch value is the change in runs value when a particular pitch is thrown. Since we w…

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Acquiring Data Using the baseballr Package baseballwithr.wordpress.com/…

Acquiring Data Using the baseballr Package

Introduction Over the years, I have found the baseballr package very helpful in obtaining Statcast data from Baseball Savant. Recently, this package has been updated (version 1.5.0) to download bas…

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Situational Runner Advancement baseballwithr.wordpress.com/…

Situational Runner Advancement

Introduction I was recently reflecting on the rule changes for the upcoming 2023 MLB season. One rule that they will keep is the so-called zombie runner rule introduced in the shortened 2020 season…

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Tim McCarver Tribute — Popular Batterymates baseballwithr.wordpress.com/…

Tim McCarver Tribute — Popular Batterymates

Introduction I was very sorry to see the passing of Tim McCarver yesterday. McCarver was well known in baseball as a great defensive catcher. In addition, after his baseball playing career, he was …

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A Comparison of Two Astros Pitchers baseballwithr.wordpress.com/…

A Comparison of Two Astros Pitchers

Introduction In a recent post, I illustrated plotting FanGraphs pitching measures for consecutive seasons as a means of detecting which measures were informative about pitching ability. Here is a g…

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Ability and Luck in FanGraphs Pitching Statistics baseballwithr.wordpress.com/…

Ability and Luck in FanGraphs Pitching Statistics

Introduction If one looks at the Pitcher Leaders section of the FanGraphs site, one sees a remarkable number of pitching measures. There are the familiar ones in the “Dashboard” such as…

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My Scott Rolen Moment baseballwithr.wordpress.com/…

My Scott Rolen Moment

A Scott Rolen Story As a Phillies fan, I was excited to see Scott Rolen voted in the baseball Hall of Fame this week. That brought back memories. Living in northwest Ohio, we don’t make it to…

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Beyond Runs Expectancy – Some Background baseballwithr.wordpress.com/…

Beyond Runs Expectancy – Some Background

Introduction: Modeling Runs Scored in an Inning In last week’s post, I presented a different way of understanding runs potential over different states of an inning defined by the runners on b…

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Beyond Runs Expectancy baseballwithr.wordpress.com/…

Beyond Runs Expectancy

Introduction We begin by displaying the well-known runs expectancy table (data from the recent 2022 season) introduced by George Lindsey in 1963. It gives the average runs scored in the remainder o…

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Review of Nine Years of Exploring Baseball Data with R baseballwithr.wordpress.com/…

Review of Nine Years of Exploring Baseball Data with R

Introduction Remarkably, it has been over nine years since Max Marchi and I started this blog to promote the Analyzing Baseball with R book. Unfortunately (from the viewpoint of the blog), Max even…

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Exploring the Home/Away Bias for Called Strikes baseballwithr.wordpress.com/…

Exploring the Home/Away Bias for Called Strikes

Introduction We are all familiar with the home field advantage in baseball. Teams tend to play batter at home, players tend to hit better in their home ballpark, and so on. But the rationale behind…

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Exploring a Season of Home Run Ofers baseballwithr.wordpress.com/…

Exploring a Season of Home Run Ofers

Introduction In last week’s post we explored the home run hitting patterns of two great hitters, Hank Aaron and Albert Pujols. In that exploration, we looked at the spacings, the gaps (in at-…

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