7 Famous Baseball Pitches (and some physics behind them)

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iStock

If you watch the playoffs from home, or listen in on the radio, you'll hear a lot of talk about what kind of pitch was just thrown, will be thrown, should be thrown, might be thrown, or, perhaps, shouldn't have been thrown. Cutters, sliders, sinkers—what are they exactly and what's the difference between them? Here's a little primer on six of the most popular pitches out there and a bit of the physics behind them:

1. Fastball - This is the basic, most important pitch in baseball. The first two fingers rest just on (or inside) the seams and the pitcher releases the pitch with the palm pretty much facing the batter, producing maximum velocity. How fast are we talking? Generally in the 90-95 mph range, though some pitchers have been known to hurl over 100 mph. Technically, what you see in the photo is called a two-seam fastball and produces a sidespin that causes the ball to cut in as it approaches the batter. There are other varieties, like the 4-seam fastball, which is thrown by holding the ball with the seams horizontal, rather than vertical. This produces backspin, which creates high pressure under the ball and low pressure on top resulting in the illusion of the ball rising (actually the ball isn't rising, just falling more slowly than it would normally). There's also a split-finger fastball where the first two fingers split, or straddle the seams, which causes the ball to drop a little as it approaches the plate. Despite the movement, the basic idea of a fastball is to overpower the batter, so he swings late and misses.

2. Sinker - If you've ever played wiffleball, you know the ball rises, falls, and curves in and away from a batter depending on where you position the air holes in the ball. Likewise, in baseball, a pitcher can create movement and variation in speed depending on how he releases the ball, or how he spins the ball. Off-speed pitches, like the sinker, are pitches that are released with the palm of the hand facing away from the pitcher. This causes the ball to sink as it approaches the batter. The idea here is to either get him to swing over the ball and miss, or, if he connects with the pitch, to produce a ground ball, rather than a line drive.

3. Changeup - A changeup is like a sinker, in that it's an off-speed pitch, only the palm is turned even further out. All off-speed pitches are similar in that they're thrown with less velocity than the fastball. But the batter doesn't know when one is coming because a good pitcher is able to use the same arm speed as he does for the fastball. So how does he throw it with less velocity? Simple: by pressing the baseball deep into his palm. Less finger contact means less torque and less velocity. So, if a batter is expecting a fastball, slowing down, or "changing up" the speed to, say, 87 mph can trip him up and he'll swing ahead of the ball. Great pitchers can build an entire career on the changeup because they're able to slow it down all the way to around 80 mph. If they can throw a fastball around 95 mph, that's a whopping 15 mph slower and really confuses the batter.

4. Screwball - This is another off-speed pitch that not only sinks, but moves from the pitcher's left side to the right as it approaches the batter. The palm is again pronated away from the pitcher, even further than the sinker and changeup. As the pitcher releases the ball, he twists the ball like a corkscrew. A left-handed batter will see the ball break away from him and a right-handed batter will experience the opposite, as the ball breaks in on him (the reverse is true if the pitcher is left-handed, of course)

5. Cutter - Turning the palm in the opposite direction produces a series of pitches known as breaking pitches. The further the palm is rotated toward the pitcher, the more movement (in most cases, but not all). The first stop over from the fastball is the cutter, which is like a fastball, only it breaks in ever so slightly and is generally thrown a few mphs slower than a fastball.

6. Slider - Basically the same thing as a cutter, a slider is thrown with less velocity than the former and the palm is rotated further toward the pitcher. The slower speed means there's more time for the ball to move, or slide, from one side of the plate to the other.

7. Curveball - A good curveball can be devastating, and also fun to watch. These are the pitches that appear to arc up toward the batter's chest (or even head) before dropping into the strike zone like a bomb as they reach the plate. Of course, not every successful curveball pitcher throws the large arc variety and they need not be so dramatic. Even a small arc keeps the hitter off balance. So how is the amazing trajectory accomplished? The pitcher turns his palm in so far that his hand looks like the letter "C." He then flicks his wrist as he releases the ball (the opposite direction from the screwball) creating topspin. The more topspin, the greater the air pressure difference between the top and bottom of the ball, and the greater the break.

Remembering Tom Dempsey, the Toeless NFL Kicker Who Set a 43-Year Field Goal Record

Kicker Tom Dempsey #19 of the Philadelphia Eagles kicks off against the Washington Redskins during an NFL football game at Veterans Stadium November 10, 1974 in Philadelphia, Pennsylvania.
Kicker Tom Dempsey #19 of the Philadelphia Eagles kicks off against the Washington Redskins during an NFL football game at Veterans Stadium November 10, 1974 in Philadelphia, Pennsylvania.
Focus on Sport/Getty Images

On April 4, 2020 former NFL legend Tom Dempsey—who set a field goal record with the New Orleans Saints nearly 50 years ago—passed away in New Orleans at the age of 73. It has been reported that Dempsey, who has been battling Alzheimer's disease and dementia since 2012, contracted coronavirus in March and his death was the result of complications from COVID-19. Read on to learn more about Dempsey's remarkable life.

 
 

Things weren't looking good for the New Orleans Saints on the evening of November 8, 1970, during a televised game against the Detroit Lions at Tulane Stadium. Though Saints quarterback Billy Kilmer had managed to connect with receiver Al Dodd on a 17-yard pass that stopped the clock, New Orleans was still down 17-16 with just two seconds left in the game. Worse yet, they were on their own 37-yard line—leaving 63 yards between them and the end zone.

Saints head coach J.D. Roberts, who had only been hired the week before, huddled with offensive coordinator Don Heinrich to quickly consider their options. There weren’t any. Suddenly, kicker Tom Dempsey, who had joined the team the year before, materialized. “I can kick it,” Dempsey told Roberts.

Dempsey would later recall that he didn’t know exactly how far the ball had to travel or that it would be an NFL record if he nailed it. If he had, he said, maybe he would’ve gotten too nervous and shanked it. But kicking the ball was what Dempsey did, even though he was born with only half of a right foot.

Heinrich sighed. There was no other choice. “Tell Stumpy to get ready,” he said.

 

Dempsey was born on January 12, 1947, in Milwaukee, Wisconsin, and later moved with his family to California. As a student at San Dieguito High School in Encinitas, California, Dempsey appeared unbothered by the congenital defect that resulted in a partial right foot and four missing fingers on his right hand. Dempsey wrestled and ran track. In football, he used his burly frame—he would eventually be 6 feet, 2 inches tall and weigh 255 pounds—to clobber opposing players as an offensive lineman. When coaches wanted to send opponents flying, they called in Dempsey.

After high school, Dempsey went on to attend Palomar Junior College in San Marcos, California, where he played football as a defensive end. At one point, when the team was in need of a kicker, the coach asked his players to line up and do their best to send the ball in the air. None kicked harder or farther than Dempsey, who became the kicker for the team and performed while barefoot, wrapping the end of his foot in athletic tape.

Tom Dempsey's modified football shoe is pictured
Tom Dempsey's modified football shoe.
Bullock Texas State History Museum

Playing at Palomar prepared Dempsey for a dual role as both lineman and kicker. But his strength, which made him so formidable on the field, occasionally got him into trouble on the sidelines, and he would eventually be kicked off the Palomar team for punching one of his coaches. After the incident, Dempsey tried out for the Green Bay Packers but found the physicality of professional players a little too much for him to handle. Rather than get into on-field collisions as an offensive lineman, he decided to focus solely on the aptitude he seemed to have for kicking. He eventually earned a spot on the San Diego Chargers practice squad in 1968. There, head coach Sid Gillman decided to encourage his choice of position—with some modifications.

Gillman enlisted an orthopedist to help develop a special leather shoe for Dempsey to wear. The boot had a block of leather 1.75 inches thick at one end and was mostly flat. Instead of kicking it soccer-style, as most players do today, Dempsey was able to use his leg like a mallet and hammer the ball with a flat, blunt surface.

The shoe, which cost $200 to fabricate, came in handy when Dempsey joined the Saints in 1969. He made 22 out of 41 field goals his rookie year and found himself in the Pro Bowl. But the 1970 season was comparatively dismal, and the Saints were holding a 1-5-1 record when they met the Detroit Lions on that night in November.

With two seconds left, “Stumpy” (Dempsey found the nickname affectionate rather than offensive) trotted onto the field. At 63 yards, he would have to best the then-record set by Baltimore Colts kicker Bert Rechichar in 1953 by seven yards.

No one appeared to think this was within the realm of possibility—you could almost hear a chuckle in CBS commentator Don Criqui's voice when he announced that Dempsey would be attempting the feat. Even the Lions seemed apathetic, not overly concerned with attempting to smother the play.

The ball was snapped by Jackie Burkett and received by Joe Scarpati, who gave it a quarter-turn. Dempsey remembered advice once given to him by kicking legend Lou “The Toe” Groza: Keep your head down and follow through. He took a step toward the ball and swung his leg like a croquet mallet, smashing into the football with a force that those on or near the field compared to a loud bang or a cannon. It sailed 63 yards to the goal post, which at the time was positioned directly on the goal line, and just made it over the crossbar.

Below, the referee threw his hands in the air to indicate the kick was good, punctuating it with a little hop of excitement. Dempsey was swarmed by his teammates and coaches. Don Criqui’s attitude in the booth quickly switched from amusement to incredulity. The Saints had won, 19-17.

“I don’t believe this,” Criqui exclaimed.

Neither could fans. In an era before instant replay, ESPN, or YouTube, you either caught Dempsey’s game-winning play or you heard about it at work or school the next week. Owing to its fleeting existence in the moment, schoolyards and offices filled with stories about how Dempsey’s boot may have somehow been augmented with a steel plate or other modification to boost his kicking prowess.

No such thing occurred, though that didn’t stop criticism. Tex Schramm, an executive with the Dallas Cowboys and chairman of the NFL’s competition committee, thought the shoe was an unfair advantage that allowed Dempsey to smash the ball like a golf club hitting a dimpled target. In 1977, the NFL instituted the “Tom Dempsey Rule,” which mandates that anyone and everyone has to wear a shoe shaped like a full foot. There would be no more allowances for special orthopedic shapes.

Dempsey appeared to take it all in stride. Shortly after his victorious kick, he received a letter from President Richard Nixon congratulating him on his inspirational demonstration. Immediately after the game, police officers went in to congratulate him by handing him cases of Dixie beer. Dempsey's girlfriend (and future wife) Carlene recalled that he didn’t come home for days due to rampant partying. When he finally settled down, they got married.

 

Dempsey spent a total of 11 years in the NFL, playing for the Saints, the Philadelphia Eagles, the Los Angeles Rams, the Houston Oilers, and finally the Buffalo Bills. In total, he made 159 field goals out of 258 attempts. For the next several decades, he would work as a salesman in the oil industry and manage a car lot before retiring in 2008 and settling down back near New Orleans. Over the years, Dempsey made several appearances at autograph shows, where he was regularly peppered with questions about the one kick that defined his career.

Almost as amazing as the kick was its attrition in the record books. While several other men managed to tie Dempsey’s record, it wasn’t until Matt Prater of the Denver Broncos kicked a 64-yard field goal on December 8, 2013, that it was finally broken—almost 43 years to the day. Some observers note that most of these notable field goals took place in Denver, where the air is thin and presumably more hospitable to kicking for distance. Dempsey managed it in New Orleans—and without toes.

Curiously, Dempsey’s legendary play was actually foreshadowed one year earlier. On October 5, 1969, he kicked a 55-yard field goal in Los Angeles. That was just one yard shy of the record he would obliterate the following year.

6 Times the Olympics Have Been Postponed or Canceled

Sander van Ginkel, Wikimedia Commons // CC BY-SA 2.0
Sander van Ginkel, Wikimedia Commons // CC BY-SA 2.0

The 2020 Summer Olympics in Tokyo have been officially postponed due to the coronavirus pandemic. The International Olympic Committee (IOC) and Prime Minister Shinzo Abe of Japan agreed to push the start date back to 2021 after Canada, Australia, and other countries announced they would not send athletes to the Summer Games this July.

The Summer Olympics is the biggest sporting event in the world, typically bringing more than 10,000 athletes from dozens of countries together every four years, The New York Times reports.

It's extremely rare for the Summer or Winter Olympics to be postponed or canceled. Since 1896, when the modern Olympic Games began, it has happened only six times—and it usually requires a war.

The Olympic Games were canceled during World War I and World War II. The 1940 Summer Games, scheduled to take place in Tokyo, were postponed due to war and moved to Helsinki, Finland, where they were later canceled altogether. The current coronavirus pandemic marks the first time the competition has ever been temporarily postponed for a reason other than war. Here's the full list.

  1. 1916 Summer Olympics // Berlin, Germany
  1. 1940 Summer Olympics // Tokyo, Japan and Helsinki, Finland
  1. 1940 Winter Olympics // Garmisch-Partenkirchen, Germany
  1. 1944 Summer Olympics // London, United Kingdom
  1. 1944 Winter Olympics // Cortina d'Ampezzo, Italy
  1. 2020 Summer Olympics // Tokyo, Japan

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