Visualizing how changes to lineups would impact historical baseball games

A guide to sabermetrics, the empirical analysis of baseball statistics

The science of baseball overturned a century of assumptions about which metrics matter most. The approach originated key categories like WAR (wins above replacement, which tries to summarize a player's total contribution by estimating how many more wins this player generated compared to a replacement-level player) and wOBA (or weight on-base average, which measures not only hits but also walks and their outcomes in the score).

In 2023, MLB changed its rules to speed up the game

The league made its most dramatic rules changes in decades by banning the shift, enforcing a pitch clock, limiting pickoff plays, using bigger bases, and adding a baserunner in extra innings. The changes worked, generating renewed interest in the sport.

A history of the rare, chaotic moments when MLB batters charge the pitcher on the mound

They typically occur when a pitcher has slung a pitch a little too close to the batter—though the exact causes vary, from quick tempers to longstanding grudges. No definitive account of these infrequent but highly visible incidents has existed, so sportswriter Jon Bois compiled data on 264 such moments between 1950 and 2025. The resulting 23-minute video explores the rich narratives leading to these charged events.

Inside MLB's robo-umping experiment

Human umpires call roughly 94% of pitches right overall, but performance reduces on borderline pitches in high-leverage moments, the calls that shape game outcomes most. A professor and historian analyze early experiments with the full "robot ump" system that helped shape MLB's decision to implement a compromise "challenge" system.

The top 100 players in baseball history

More than 20,000 players have played in Major League Baseball since the 1870s, many passing in and out of the memory of even die-hard fans. While necessarily subjective, these rankings based on votes from baseball writers ranks those whose greatness left a lasting impression. From Barry Larkin (No. 100) to Babe Ruth (No. 1), explore the top 100 baseball players over more than a century.

A 1930s card game birthed modern fantasy sports

"National Pastime" used the statistics of real Major League Baseball players to determine a winner, creating the template for the modern fantasy sports model.

Statcast runs machine learning models in the 23-second gap between every pitch

The same Hawk-Eye cameras that track spin rate, exit velocity, and sprint speed also feed proprietary team models that update in near-real time. Some organizations have built streaming pipelines to surface insights mid-at-bat before the next pitch arrives.

Integration of Latino players in MLB

The Senators’ spectacular losing record obscures one of the most important stories in baseball history: the club’s role in integrating Latino players into the major leagues

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Hear how gerrymandering is like 'Moneyball applied to politics'

In a 2016 interview, journalist David Daley explained how Republicans used data-driven targeting after the 2010 census to lock in durable advantages, comparing modern gerrymandering strategies to the analytics revolution in baseball.

Ranking every baseball stadium outfield by how hard it is to play

Park factors have long adjusted for how a ballpark helps or hurts hitters and pitchers, but rarely fielders. MLB's Statcast looked at five years of Outs Above Average data to shed light on the gap. It found that stadiums with roofs or in cities that regularly have sunny skies dominate the easy end, while those battered by wind or rain, like San Francisco's, are the hardest to play.

Henry Chadwick invented the box score in 1859—and wrote off walks as a pitcher's failure

The English migrant adapted cricket statistics for baseball, publishing the first box score in the game's early days. Baked into that was a dismissal of the walk as reflecting a batter's skill, instead implying it was a pitcher's mistake. That assumption kept walks out of the box score for more than a century, concealing the skill involved in drawing walks.

The story behind one infamous World Series moment

“The Bartman Incident” during Game 6 of the 2003 NLCS forever changed the life of Cubs fan Steve Bartman, who quickly descended into anonymity. This 2005 ESPN story attempts to find answers behind the notorious Bartman.

A deep dive into the man behind ballpark nachos

Nachos were invented in Mexico in 1943, but "ballpark nachos" (featuring liquid cheese and pickled jalapenos) were invented in 1976 for the Texas Rangers, then a relatively new franchise. This Texas Monthly piece digs into the history of Frank Libreto, who realized classic nachos could be a cost-efficient concession with just a few small tweaks.

Exploring the Larry Bird punch that almost changed March Madness

NFL Draft decisions are shaped by brain science, data, and office culture

Carnegie Mellon researchers say Draft-room choices are influenced by the "jackpot effect"—where higher stakes can impair performance—as well as by groupthink, the limits of data, and whether scouts feel safe speaking up.

Visualizing shifts in emotional performance in film

Computational scientists were curious: has the intensity of emotional expression in films changed over the decades? Using their sophisticated analytical models, the researchers discovered actors' emotional performance has declined in intensity over time. They believe the close-up shots common in contemporary film-making allows actors to be more subtle in their performance. Check out the main takeaways and charts with this unusual study.

The Elo rating system allows you to compare teams across history

The Elo rating system—named after inventor Arpad Elo—allows you to compare any team from any season dating back to the 1870s on an absolute scale and finally make an objective argument about the greatest lineup of all time.

The history of infographics: cave art to interactive visuals

When did humans first create infographics? This article and related infographics detail how artistic data representations have evolved alongside humans and other hominins. The roots of infographics can be traced back to cave paintings, such as...

Tennis' global evolution

In the 1970s and 1980s, American men and women dominated the top 100 rankings on both tours. But as each tour expanded its global reach, the American dominance declined. This Bleacher Report analysis breaks down the national make-up of the top 100 players for each decade. View maps that show which country gained and lost rankings through each decade and see who is the top country now.

Visualize how data becomes organized through a variety of sorting algorithms

This interactive shows how different algorithms shift elements in a randomized set to order them from smallest to largest. By comparing the different procedures and their corresponding functions, users can explore how runtimes vary across algorithms that complete the same task.

The inclusion of NBA stars in the '92 Olympics changed basketball's global standing

The Olympics finally permitted professional basketball players to play in 1992 Summer Games and the NBA produced one of the greatest basketball teams ever assembled: The Dream Team. Billions worldwide watched Jordan, Bird, and Magic dominate to win gold, inspiring future Hall of Famers and increasing the NBA's viewership.

Free agency dramatically changed player compensation

When team owners created the reserve clause in 1879, the idea was that each team would control player salaries rather than the open market. After the 1975 elimination of the reserve clause, players became eligible for free agency after a contract expired, increasing wages across the league.

See a visualization of the Japanese attack

This animated visualization reconstructs the two-wave Pearl Harbor strike—showing the flight paths, ship positions, and timing that allowed Japan’s carrier force to severely damage Battleship Row in just 110 minutes while catching US defenses off guard.

The design changed video games forever

Miyamoto’s direction and Kondo’s sound showed younger generations the potential of video games, inspiring a more sophisticated form that moved far beyond the one-dimensional entertainment of the arcade era.

When your 9-to-5 becomes optional

You've seen the headlines. But what would actually happen if everyone's 9-to-5 became optional? We dug into the data. Traced automation philosophy back thousands of years. Examined what happened when elevator operators disappeared. Looked at Alaska's 40-year experiment paying every citizen. And investigated the Philippines, where 89% of call center jobs are now at risk. What we found was more positive than bleak. This video explores three questions: What does the data actually show? What does history tell us about this kind of disruption? And what happens when work becomes optional?

Electronic trading transformed investing, ushering in a new era for retail investors in which average Americans could research stocks online and then use early platforms like StreetSmart and E-Trade to conduct their transactions

In the early 1990s, stock brokerages knew that online trading would be a great equalizer, creating opportunities for more individuals to buy and sell stocks.

A century of Billboard issues documenting the evolution of popular music.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

Explore the known asteroids, comets, and spacecraft involved in asteroid studies within our solar system with 'Eyes on Asteroids,' a 3D visualization from NASA.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Brandi Chastain, the star of the 1999 US victory over China in the 1999 Women's World Cup, was a last-second choice to take the penalty kick that sealed the victory.

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

A researcher recently discovered an interview from 1967 between groundbreaking journalist Joan Didion and the Grateful Dead, years before the band became an institution.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Meet the 56 signers of the Declaration of Independence—most of whom didn't put pen to paper until August 2, 1776—and see their original signatures.