Jacob deGrom’s name is synonymous with pitching dominance. When healthy, he operates on a tier above his peers, posting strikeout rates and earned run averages that belong in a video game. While his triple-digit fastball garners the headlines, the pitch that truly unlocks his historic ceiling is his devastating changeup. This offering acts as the perfect counterpunch to his high-octane heat. To understand the full scope of deGrom’s greatness, one must analyze how this changeup performs across the vast spectrum of game situations—from two-strike counts to high leverage moments, and against both left-handed and right-handed hitters. The data reveals a pitch that is not just a secondary weapon, but a foundational tool that defines his entire method of attack.

This analysis moves beyond simple praise, diving into the mechanical, statistical, and situational underpinnings of one of the most effective single pitches in the modern era. We will explore why hitters look helpless against it, how deGrom channels elite arm speed into pure deception, and what the future holds for a pitcher who relies so heavily on a pitch that moves in the opposite direction of everything else he throws. The goal is to provide a comprehensive, data-backed look at exactly why deGrom's changeup is a cheat code against MLB hitters.

The Mechanical Blueprint: Engineering an Elite Changeup

The foundation of deGrom's changeup lies in a delivery that is deceptively simple. He uses a circle change grip, burying the ball deep in his palm to kill spin. Unlike many pitchers who tip their off-speed pitches by slowing their arm speed or opening their hips early, deGrom maintains near-identical arm speed and release point as his fastball. This tunneling effect is the single most important factor in the pitch's success. From the hitter's perspective, the first 15-20 feet of the pitch look identical to a 101 mph fastball.

The pitch typically sits between 91 and 93 mph, a velocity range most major league pitchers would love to have on their fastball. This high velocity is critical. It prevents hitters from simply sitting changeup because the timing differential is small enough to be disruptive, yet large enough to cause the bat to arrive early. Statcast data consistently shows that deGrom's changeup has elite vertical drop and heavy arm-side run. For a right-handed pitcher, this arm-side run bores in on the hands of left-handed hitters and fades down and away to righties.

Furthermore, his release point is exceptionally high, allowing him to create a steep downward plane. The changeup, therefore, does not just fade laterally; it drops off a table. This combination of high velocity, high release point, and heavy movement makes the pitch nearly impossible to square up. His development of this changeup was not accidental. deGrom labored to find a grip that gave him the feel for the pitch, settling on a changeup that allows him to pronate aggressively through the zone, finishing with his thumb pointing down. This aggressive pronation is what gives the pitch its signature tumbling action and fade.

Two-Strike Dominance: The Put-Away Weapon

When deGrom falls ahead in the count, the at-bat is effectively over. In 0-2, 1-2, or 2-2 counts, hitters are forced to protect the plate. This is precisely when deGrom's changeup becomes truly dangerous. He will start the pitch in the strike zone, only to have it fade out of the zone at the last second. Hitters chase relentlessly, and they miss consistently. Whiff rates on deGrom's changeup in two-strike counts frequently exceed fifty percent, a number that is almost double the league average for secondary pitches.

This is not just about missing bats; it is about generating weak contact. Even when hitters do manage to put the ball in play against the changeup in two-strike counts, the result is often a weak ground ball. The pitch's heavy sink and fade prevent hitters from getting the barrel out in front. This ability to both miss bats and induce weak contact makes the changeup a truly elite put-away weapon that elevates deGrom from a great pitcher to a historically dominant one.

High-Leverage Execution: Thriving Under Pressure

In high-leverage situations, such as late innings with runners in scoring position, deGrom's usage of the changeup takes on a strategic dimension. He does not shy away from the pitch; he leans into it. Data shows that his changeup usage increases when the game is on the line. The reason is simple: the changeup generates weak contact and ground balls. In a situation where a ground ball double play can end a threat, deGrom trusts his changeup to produce the exact outcome he needs. He will throw the changeup in the dirt, forcing a chase, or he will run it inside on the hands, inducing a weak chopper. His ability to execute the pitch in the most pressurized moments of the game demonstrates remarkable trust in the offering's late movement and reliability.

Left-Right Splits: Neutralizing the Platoon Advantage

Historically, the changeup is a right-handed pitcher's best tool against left-handed hitters. deGrom's changeup is particularly effective in this regard. The arm-side run of the pitch bores in on the hands of left-handed hitters, turning what could be a hit into a weak broken-bat ground ball. Against right-handed hitters, the pitch fades down and away, frequently below the zone for a chase. The changeup allows deGrom to attack both sides of the plate with a pitch that moves away from the hitter's strength. Lefties cannot sit on the fastball because the changeup will tie them up. Righties cannot cheat on the changeup because the fastball will blow them away. The platoon splits on deGrom's changeup are remarkably balanced, a sign of a pitch with high quality and advanced command.

The Count Context: Early Aggression and Late Deception

First Pitch Strikes

One of the most underrated aspects of deGrom's changeup usage is his ability to throw it for a strike early in the count. By establishing the changeup in 0-0 or 1-0 counts, he prevents hitters from sitting exclusively on his fastball. This early count usage widens the hitter's zone of coverage, forcing them to respect the changeup for the rest of the at-bat. When a changeup is thrown for a strike early, it creates a cognitive conflict in the batter's mind that deGrom can exploit with 101 mph heat later in the count. It is a classic setup sequence executed at the highest possible level.

Deep Counts

DeGrom's willingness to throw the changeup in deep counts (2-2, 3-2) showcases his elite command. In 3-2 counts, throwing a strike is mandatory, yet deGrom will often rip a changeup on the corner, freezing the hitter or inducing weak contact. The high velocity of his changeup makes it an effective 'strike' pitch even in counts where hitters expect a fastball. This deep-count trust is the hallmark of a pitch that is not just a put-away tool, but a foundational piece of his entire arsenal.

The Tunneling Effect: Cognitive Overload for Hitters

The most intimidating aspect of facing deGrom is the cognitive load placed on the hitter. Because his changeup tunnels so perfectly with his fastball, hitters must make a decision in milliseconds based on information that is inherently ambiguous. The brain processes visual cues, but those cues are identical for both pitches. This leads to high levels of anxiety and swing hesitation. Batters often remark that they feel like they are guessing. When they guess fastball, they are early on the changeup. When they guess changeup, they are frozen by the 101 mph fastball. This constant state of uncertainty leads to poorer swing decisions, higher chase rates, and lower quality of contact. The changeup is the source of this confusion, making it an incredibly valuable strategic chess piece in every game he starts.

Evolution of an Arsenal: The Changeup's Growing Role

Early in his career, deGrom's changeup was a solid third option behind his fastball and slider. Following his breakout 2018 Cy Young season, the usage rate of his changeup increased dramatically. By the time of his historic 2019 and 2021 campaigns, the changeup was arguably the best single pitch in baseball. Opponents slugged barely over .200 against it during these peaks. This evolution demonstrates a pitcher mastering his craft. He learned that pure velocity was not enough; he needed a pitch that kept hitters guessing. By developing the changeup into a true plus-plus offering, deGrom ascended from a great pitcher to a generational talent.

Batter Perspective: What the Data Misses

While the numbers paint a clear picture of dominance, the subjective experience of hitters adds depth to the analysis. Consistent reports indicate that deGrom's changeup is uniquely difficult to pick up. It does not fade as noticeably as some changeups out of the hand; instead, it maintains its line before dropping sharply. This lack of visual warning is rare. Most changeups have a visible hump or release point difference. deGrom's has none. Hitters report that the ball simply gets on them quicker than expected, and by the time they recognize it as a changeup, their swing is compromised. This consistent feedback from the highest level of baseball players confirms that the changeup is not just statistically effective, but psychologically dominant.

Comparing the Changeup to Other Elite Pitches

To understand just how good deGrom's changeup is, it helps to compare it to other historical offerings. While pitchers like Bruce Sutter (splitter) or Mariano Rivera (cutter) dominated with one pitch, deGrom's changeup is unique for its velocity and usage against both lefties and righties. Max Scherzer's changeup is excellent, but it relies more heavily on arm-side fade. Clayton Kershaw's changeup is a circle change with a huge velocity drop. deGrom's combines the velocity of a hard sinker with the movement of a circle change. It is, by many statistical measures, the best changeup of the Statcast era in terms of run value per 100 pitches. This context helps frame just how special the pitch truly is.

Injury Context and the Future of the Changeup

As deGrom returns from Tommy John surgery and navigates his late 30s, the role of the changeup in his arsenal becomes even more pronounced. Pitchers often lose a tick or two of velocity as they age, but their secondary pitches can remain elite. deGrom's changeup, which relies heavily on movement, deception, and arm speed, should age gracefully. Even if his fastball dips from 100 mph to 96 mph, the 8-9 mph velocity gap will remain a devastating weapon. Furthermore, the pitch places less stress on the elbow than a slider or curveball, making it a healthier offering for a pitcher with an extensive injury history. Expect deGrom to feature the changeup even more frequently in the coming seasons, potentially making it his primary pitch as he manages his workload and preserves his overall effectiveness. The changeup is the key to deGrom extending his prime deep into his career.

Practical Lessons for Aspiring Pitchers

What can the next generation of pitchers learn from Jacob deGrom's changeup? The following list is instructive for anyone looking to improve their secondary offerings.

  • Arm Speed is Non-Negotiable: The most important factor for a changeup is that it looks exactly like the fastball out of the hand. If you slow your arm down, you are tipping the pitch. Practice throwing the changeup with identical arm speed to your fastball, even if it means the pitch hangs or misses location at first.
  • Movement over Pure Velocity Differential: While a large velocity gap is helpful, it is not strictly necessary if the pitch has elite movement. deGrom's changeup has heavy sink and fade. Focus on generating arm-side run and vertical drop through pronation.
  • Command is Essential: A changeup that cannot be thrown for strikes is not an effective weapon. Spend time throwing the changeup in all quadrants of the zone. Develop the ability to throw it to the hands of left-handed hitters and down and away to righties.
  • Use it Early: DeGrom uses his changeup early in counts to set up his fastball. Do not confine the changeup to two-strike counts. By establishing it early, you make your fastball more effective and keep hitters off balance.

Modern pitching development systems, such as those used at Driveline Baseball and other elite training facilities, emphasize these exact principles. The ability to tunnel pitches, manipulate spin, and maintain arm speed is the foundation of modern pitching success. deGrom is the living embodiment of these concepts, making his approach a template for pitchers at every level.

Conclusion: The Changeup as a Legacy Pitch

Jacob deGrom's changeup is not merely a secondary pitch; it is a defining element of his greatness. It functions as the perfect complement to his elite fastball, creating a two-pitch combination that is virtually unhittable when he is healthy. Its effectiveness varies by situation—two-strike counts, high leverage moments, and against lefty hitters—but its overall impact is consistent: it dominates at an elite level rarely seen in the sport.

As deGrom writes the final chapters of his career, the changeup will be his constant companion. It is the pitch that allows him to age gracefully, to pitch strategically, and to continue baffling hitters even if his raw velocity declines. For a pitcher whose career has been defined by otherworldly stuff, the changeup represents the intellect and craft behind the explosive talent. It is the silent partner to the fastball's thunder, and it is a major factor in ensuring that Jacob deGrom remains one of the most feared pitchers in baseball.