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.

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 2026 season will be the first to allow challenges on balls and strikes

The Automated Ball Strike (ABS) technology—first tested in the minor leagues and in MLB's 2025 spring training and All-Star Game—defines the strike zone rather than relying on individual umpires' interpretations of it. Rather than allowing ABS to determine every ball or strike, though, each team will now have a limited number of in-game challenges to umpires' calls, which will be settled by ABS.

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.

Before 1920, a single baseball was used throughout a game

During the Deadball Era, pitchers doctored a baseball with spit, nail files, and licorice for a competitive edge, leading to discolored, mangled, and lopsided baseballs by the game's end. This concluded in 1920 when Cleveland Indians star shortstop Ray Chapman was hit in the head by a ball too dirty to see and died. The rules were changed to require an umpire to replace a dirty baseball and outlawed the spitball.

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.

In 1975, a Major League Baseball clause that kept players legally tied to their teams after retirement was dismantled

Players fought the "reserve clause" for years, citing the Sherman Antitrust Act of 1890, but to no avail—in fact, the Supreme Court ruled professional baseball was neither interstate nor commerce in 1922. Players effectively unionized in 1966, and by 1975, an arbitration panel ruling led to the dismantling of the reserve clause, which had been the only antitrust exemption in professional sports.

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.

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.

An eephus pitch catches batters by surprise

The specialty pitch—rarely used by starters—is unexpectedly slow and thrown with an abnormally high arc, often catching batters off-guard. Below is one famous example from 1981: Yankees pitcher Dave LaRoche striking out the Brewers' Gorman Thomas with an eephus that fans called the "La Lob."

Ken Caminiti exposed steroid use around the league

In 2002, newly retired Ken Caminiti was the first to admit to using steroids as a player, citing how common PEDs were in the league, something that had long been rumored, especially after the single-season home run record was broken in 1998 by Mark McGwire.

In the 1970s, the NFL developed rules to protect players from injuries

It’s hard to imagine a football game without hash marks, but that’s how it was before Walter Camp and the rules committees changed the game. This NFL interactive deep dive goes into the evolution of the kickoff, the hash marks, and the chop block. Those rules committees are still in play today and are making the game safer for the next generation of NFL players.

‘The Star-Spangled Banner’ became associated with sports at the 1918 World Series

The song is often played at the start of amateur and professional sports games, a tradition that historians say became popular during World War I. During the seventh-inning stretch of the first game of the 1918 World Series, a band started an impromptu version. Red Sox player Fred Thomas, on leave from the Navy, turned to salute the flag, and the crowd followed his lead.

Jackie Robinson, who broke the MLB's color barrier, made his debut in 1947

In the early 1940s, Brooklyn Dodgers general manager Branch Rickey began scouting Negro League players to break baseball’s long-standing color barrier. Jackie Robinson was signed in 1945 and made his major league debut on Opening Day 1947 against the Boston Braves.

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.

The X Games pioneered broadcast innovation with live drone coverage

In 2015, ESPN used untethered drones for the first time in US live sports—deploying them at the X Games to capture aerial footage from angles previously impossible.

Ed Sabol's vision of NFL Films impacted how sports were filmed

When the NFL put out a bid to film the 1962 NFL Championship Game, Ed Sabol promised NFL Commissioner Pete Rozelle his higher price tag would be worth it. Sabol’s style of fixed high shots, close-ups of players, and fans in the stands revolutionized how sporting events are filmed, influenced moviemakers like Ron Howard, and gave birth to NFL Films.

Maradona's controversial "Hand of God" goal against England

The illegal handball occurred during the 1986 FIFA World Cup and went unseen by the referees. Because the refs didn't observe it and couldn't access the replays at that time, the handball was allowed to stand. When Maradona was later asked whether he handled the ball illegally, he replied it was "a little with the head of Maradona and a little with the hand of God," giving the play its name.

Marbury v. Madison established the Supreme Court's power of judicial review

The 1803 ruling empowered courts to strike down laws that violate the Constitution, permanently expanding the Supreme Court's authority and cementing its role as a coequal branch. This video explains the case and its lasting impact.

Exploring the Larry Bird punch that almost changed March Madness

Pickleball was invented in 1965 on Bainbridge Island, Washington

Bill Bell and then-Washington State congressman Joel Pritchard created the game as a way to entertain their bored children. They grabbed items they had on hand, using ping pong paddles to hit a wiffle ball over a hip-height badminton net.

In 1992, sports betting was outlawed in places where it wasn't already legal

On Oct. 29, 1992, then-President George HW Bush signed the Professional and Amateur Sports Protection Act, outlawing sports gambling where it was not already legal.

Mail-in voting has been used in US elections since the Civil War

Americans have cast mail-in ballots for more than a century, but COVID-19 greatly expanded their use. Modern systems track ballots and often require signature verification, increasing access while maintaining election security.

Reels have strongly influenced NASCAR’s social media strategy

With viewership and attendance tanking from 2008 to 2018, NASCAR knew it needed better marketing to reach the next generation of fans, so it designed a new social media and content creation strategy. Using these new methods, it achieved 27% follower growth in three years.

Tinder revolutionized dating when it introduced swipe-based interactions

Many dating apps today allow users to "swipe right" to match with someone and "swipe left" to opt out of the match, but Tinder did it first, introducing swipe-based interactions in 2013. The idea for swipes came from the founder's desire to gamify dating—Tinder's early interface was based on a deck of cards that users could sort.

A brief history of augmented reality (w/photos and videos)

Different sources trace the history of augmented reality back to the beginning of the 20th century,. The term augmented reality however was coined by Thomas P. Caudell in the '80s.

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.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

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

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks

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

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Walt Disney's early film 'Alice's Wonderland' was a groundbreaking innovation in the silent film era

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

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.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

A pickleball's loud 'pop' sound can reach 120 decibels, which is equivalent to a hammer hitting a nail

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.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

Fish populations in the Great Barrier Reef have increased after installing waterproof speakers on the ocean floor that played recordings of sounds from healthy coral reefs.

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

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

See this overview of the firework rules across all 50 states, ranging from a complete ban on non-professional fireworks in Massachusetts to states with more lax rules like Indiana.

The Beatles' US label rejected the band's first two singles, 'Please Please Me' and 'From Me to You,' with one executive calling the band 'dead in the water.'

The concept of phantom limbs, the perception that amputated limbs are still present, dates back to a French military surgeon in the 16th century.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.