Instant replay was unofficially introduced in baseball in 1999

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.

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.

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."

Fantasy sports began in the 1860s

“Sebring Parlor Base Ball,” a tabletop board game in which players flicked a coin as if they were hitters is believed to be the first game that allowed players to imagine themselves as athletes without actually taking part in physical activities.

The MLB's reserve clause gave owners rights to players after their contracts expired

The clause was added to contracts in 1879, allowing owners to hang on to players after the expiration of their contracts, sometimes in perpetuity.

‘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.

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.

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.

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.

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.

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.

The greatest games in NFL history

Do you remember “The Catch”? What about the “Immaculate Reception”? Did you watch when Elway finally got his ring? Take a trip down memory lane with this Bleacher Report list of the 50 greatest games in NFL history. Explore classic NFL moments dating back to the NFL’s early days in the 1930s and '40s to the present day.

How is the climate like baseball?

A two-minute video taking a lighthearted look at an unexpected analogy, explaining why some people call carbon dioxide (and the other greenhouse gases) the steroids of the climate system.

The origins of volleyball in a game called mintonette

Volleyball was invented in 1895 in Massachusetts, USA, by William G. Morgan of the YMCA. He aimed to create a less strenuous alternative to basketball, using elements from basketball, tennis, handball, and baseball. Originally called "mintonette," it was introduced at a YMCA conference and took off. Dive into the history from then until today here.

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.

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.

The inaugural WNBA game

On June 21, 1997, the Los Angeles Sparks and New York Liberty faced off in the inaugural WNBA game. The match-up was the perfect way to introduce the new league, thanks to the showdown between gold medalists Lisa Leslie and Rebecca Lobo. These highlights allow you to revisit the game and witness a nascent league, long before it became the powerhouse it is today.

Tony Hawk landed the first-ever 900 at the 1999 X Games

Tony Hawk made history by landing the first 900-degree spin in competition in 1999 after 11 attempts—creating one of the most iconic moments in action sports.

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

The process of electronic funds transfer was approved in the US in 1978

An electronic funds transfer is the transfering of money from one bank account to another via computer-based systems. When it was first introduced, it was revolutionary. A video from 1980 aimed to explain the value of electronic funds transfer to consumers at the time.

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.

In 1996, 'The Curtain Call' changed fans' understanding of wrestling

Maintaining kayfabe, or the fiction of the professional wrestling universe, was a long-held tradition in the industry. That changed in 1996, when four WWE wrestlers broke character after a match at Madison Square Garden in an event later dubbed "The Curtain Call." This podcast breaks down the historical aftershocks.

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.

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.

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.

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

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

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.

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

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

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

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

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.

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

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.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

Coral polyps reproduce via broadcast spawning, where entire reefs simultaneously release reproductive cells for about one hour, once a year.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

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

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.

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

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For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

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.'