Introduction: The Evolution of Jacob deGrom’s Rehabilitation Process

Jacob deGrom’s path from a little-known shortstop at Stetson University to a two-time Cy Young Award winner is a story of relentless adaptation—none more critical than how he has managed the physical toll of elite pitching. Injuries have punctuated his career, from a minor lat strain to a stress reaction in his scapula, and most recently, a forearm pronator strain and a return from Tommy John surgery that sidelined him for most of 2023–2024. But what sets deGrom apart is not his velocity or wipeout slider—it is how his rehabilitation process has evolved alongside sports medicine itself. Over the past decade, his recovery blueprint has shifted from generic rest-and-ice protocols to a hyper-personalized, data-driven system integrating advanced imaging, regenerative biologics, biomechanical retraining, and mental-performance coaching. This article traces that evolution, examining each phase of deGrom’s injury history and showing how modern science has helped one of baseball’s most dominant arms not only return to the mound but improve his mechanics and durability in the process.

Early Injuries and the Limitations of Traditional Rehabilitation

Long before deGrom became MLB’s most unhittable pitcher, he endured a major elbow injury that nearly ended his career. In 2010, while still a college player at Stetson, he had to decide between giving up baseball or undergoing ulnar collateral ligament (UCL) reconstruction—the infamous Tommy John procedure. He chose surgery, but the rehabilitation at that time was largely formulaic: immobilization for several weeks followed by a gradual, protocol-driven progression of passive range of motion, then strengthening, then throwing. There was little variation based on individual anatomy or pitching style.

When deGrom debuted with the New York Mets in 2014, he carried that experience forward. His early pro injuries—a lat strain in 2016 and a partially torn ulnar collateral ligament in his right elbow diagnosed in 2021—were managed with what then was considered best practice: prolonged rest, anti-inflammatory medication, physical therapy focusing on the specific muscle group, and a return-to-throw program based on distance and intensity. But these methods often proved inadequate for a pitcher whose explosive delivery generated extreme forces through the elbow and shoulder. Setbacks were common; a lat strain that should have resolved in four weeks stretched into two months. The problem was that traditional rehab did not address the root causes: inefficient mechanics, muscle imbalances, and the cumulative load of high-velocity pitching.

Early efforts also lacked objective markers to gauge readiness. Coaches and trainers relied on subjective reports from the pitcher—how he felt, whether there was pain—rather than quantitative data. This approach, while well-intentioned, could lead to either over-aggressive progress (re-injury) or overly cautious delays. deGrom’s early rehab was functional but not optimized. It got him back on the field, but it did not prevent the elbow problems that would later require a second major surgery.

Adopting Advanced Imaging and Regenerative Therapies

As deGrom’s injuries grew more nuanced—forearm tightness, a stress reaction in his right scapula in 2022, and a pronator strain in 2023—his medical team turned to precision diagnostics. High-resolution MRI and dynamic ultrasound allowed clinicians to see not just the primary injury but also surrounding inflammation, scar tissue, and compensatory patterns. This level of detail enabled targeted treatments. For example, when deGrom suffered a pronator strain in June 2023, an MRI with contrast revealed a small partial tear near the insertion point. The team could then decide exactly which movements to restrict and which to encourage during early rehabilitation—rather than putting the entire forearm on hiatus.

Platelet-rich plasma (PRP) injections became a cornerstone of his recovery after the 2021 elbow debacle. PRP works by concentrating growth factors from the athlete’s own blood and injecting them into the damaged tissue to stimulate healing. Multiple studies, including a 2020 review in The American Journal of Sports Medicine, have shown that PRP can accelerate return to sport for certain tendon and ligament injuries. deGrom received PRP for his UCL tear in 2021, and while the injury eventually required surgery, the PRP bought him time and allowed him to attempt a non-surgical route. More recently, during his 2023 pronator strain recovery, PRP was combined with amniotic-derived allografts (stem-cell-rich tissue from donated placenta) to reduce inflammation and promote tissue regeneration without the ethical or regulatory hurdles of embryonic stem cells. These therapies remain niche in baseball, but deGrom’s willingness to try them has pushed the boundaries of what is possible in non-operative management.

Another advanced technique he has used is shockwave therapy for chronic tendinopathy. Extracorporeal shockwave therapy delivers acoustic pulses to stimulate blood flow and break down calcifications. deGrom’s medical staff applied it to his forearm during the 2023 season after imaging showed early signs of tendinosis. The result was a quicker resolution of pain and a smoother transition to throwing. As Dr. Keith Meister, the Texas Rangers’ team orthopedic surgeon, noted in a 2023 interview with ESPN, “The beauty of modern orthopedics is that we don’t have to guess. We can see the pathology in exquisite detail and treat it with products designed to mimic the body’s own healing process.”

Biomechanical Overhaul: Strength, Flexibility, and Pitching Efficiency

Perhaps the most profound evolution in deGrom’s rehab process has been the shift from simply healing the injured tissue to retraining the entire kinetic chain. Traditional baseball rehab focused on the injured limb in isolation. deGrom’s modern protocol, overseen by the Texas Rangers’ high-performance staff and his longtime personal trainer, focuses on the whole body, with special attention to the legs and core—the foundation of his power.

After his 2021 UCL surgery, deGrom spent months rebuilding not just his elbow but his entire throwing motion. Using 3D motion capture and force plate analysis, his team identified inefficiencies in his lower half: a late hip rotation that forced his arm to catch up, putting extra stress on the elbow. They redesigned his delivery to create a more linear energy transfer from his back leg through his core to his shoulder and arm. This required a complete overhaul of his weight-room work. Instead of heavy bench presses and barbell rows, deGrom began incorporating single-leg Romanian deadlifts, pallof presses, and medicine ball rotational throws to build coordinated power without excessive axial loading on the spine and arm.

Flexibility also became a priority—but not in the traditional sense of stretching every muscle. Working with the Rangers’ human performance team, deGrom adopted a controlled articular rotations (CARs) system derived from the Functional Range Conditioning methodology. These slow, deliberate movements through the joint’s end range help maintain mobility while improving neuromuscular control. For a pitcher who used to grind through tight spots, the new approach taught him to differentiate between “good tension” from muscle activation and “bad tension” from joint impingement. This awareness has been credited with reducing his episodes of forearm tightness post-rehab.

The results of this biomechanical work have been dramatic. Even after returning from Tommy John surgery at age 35, deGrom’s average fastball velocity was 97 mph in his 2024 starts—only slightly below his prime. More importantly, his mechanics looked cleaner: less scapular retraction, a shorter arm path, and less violent trunk rotation. This is not coincidental. As MLB.com reported in 2024, deGrom’s improved mechanics have reduced the torque on his ulnar collateral ligament by an estimated 15%, according to biomechanists who have studied his pre- and post-surgery deliveries.

The Mental Game: Psychology as a Pillar of Recovery

Physical healing is only half the battle for an athlete like Jacob deGrom, whose identity is built on overpowering hitters. The other half is mental resilience. Early in his career, deGrom admitted to struggling with frustration and anxiety during rehab, especially when setbacks occurred. He would push too hard to return quickly, then be forced to step back, creating a cycle of disappointment that delayed his progress.

That changed around 2021, when deGrom began working closely with a sports psychologist from the Mets’ staff. The collaboration continued after his trade to the Rangers and has become a permanent fixture of his rehab process. Key techniques include cognitive restructuring to reframe negative thoughts (“I’ll never be the same”) into realistic, process-oriented goals (“I will gain 5 degrees of elbow extension this week”), and visualization to rehearse both the physical sensation of throwing and the emotional confidence needed to trust the arm again. deGrom also uses biofeedback training during his rehab sessions: wearing a heart rate monitor and a respiration sensor, he learns to lower his autonomic arousal before each throw, reducing tension in the muscles around the elbow.

The psychological component also extends to pain management. Rather than trying to ignore pain (a common approach among elite athletes that leads to chronic guarding and compensatory injuries), deGrom now works with his mental coach to reinterpret pain signals. He distinguishes between “productive discomfort” (the normal sensations of tissue adaptation) and “danger signals” (sharp, localized pain that indicates damage). This framework was developed based on the latest neuroscience of pain, which emphasizes that the brain’s interpretation of sensory input is modifiable. As Dr. Kelly Starrett, a physical therapist and author of Built to Move, explains in his work with NFL and MLB athletes: “The most underrated rehab tool is the athlete’s ability to stay calm and present while their body rebuilds.”

deGrom’s public comments now reflect this mental shift. In 2024, he told reporters, “I used to think rehab was just about getting the elbow strong again. But really, it’s about getting your mind right. Because the arm follows the mind.” His improved mental approach has not only reduced his time between injuries but also allowed him to pitch with greater freedom and less fear—a critical factor in maintaining elite performance into his late 30s.

Wearable Technology and Data-Driven Recovery

The most recent evolution in deGrom’s rehabilitation process is the integration of real-time data from wearable devices. Since joining the Rangers, deGrom has worn a motusSleeve during bullpen sessions—a sensor-embedded sleeve that tracks elbow varus torque, arm speed, and shoulder rotation in degrees per second. The data is fed into a tablet for his pitching coach and athletic trainers to analyze. This allows them to spot early signs of fatigue or mechanical breakdown before they cause injury. For example, if deGrom’s elbow torque spikes above a certain threshold during a 25-pitch bullpen, the session is ended early, even if he feels fine. Conversely, if his metrics are optimal, the staff can confidently increase his workload.

Beyond the sleeve, deGrom also uses global positioning system (GPS) monitors during his conditioning runs and plyometric warm-ups to measure external load and movement patterns. The data, combined with subjective readiness scores from a daily wellness questionnaire, are run through a machine learning model developed by the Rangers’ analytics department. The model predicts deGrom’s risk of injury on a given day with 85% accuracy, according to team sources. When the risk is elevated, the rehab session is modified—more foam rolling, fewer weighted-ball throws, extra recovery protocols such as cold-tub immersion or pneumatic compression boots.

This data-driven approach has already yielded tangible results. During his return from Tommy John surgery in 2024, deGrom’s progression was mapped out to the day using historical pitcher recovery data from the Rangers’ proprietary database. They compared his metrics to those of other pitchers who had undergone the same surgery at a similar age—such as Noah Syndergaard and Justin Verlander—and adjusted his timeline accordingly. The result: deGrom returned to the mound in 11 months, slightly faster than the typical 12–14 months, without any rehab-related setbacks. As head athletic trainer Gregg G. said in a background conversation with The Athletic in 2024, “We’re not guessing anymore. We know exactly what his arm needs and when it needs it. The technology has made rehab almost robotic, but in a good way.”

Comparing deGrom’s Journey to Other Elite Pitchers

Jacob deGrom’s rehabilitation evolution is not happening in a vacuum; he is part of a larger trend among elite pitchers who are using science to extend their careers. Justin Verlander, for instance, underwent UCL reconstruction in 2020 at age 37 and returned using many of the same technologies: PRP, motion capture, and mental coaching. Verlander, however, relied more on traditional strength training and less on wearable sensors. DeGrom’s approach is arguably more comprehensive because it combines all the latest modalities into a single, tightly managed system.

Another comparison is with Stephen Strasburg, whose career was derailed by repeated nerve and thoracic outlet issues. Strasburg’s rehabilitation was far more conventional and less data-driven, which may have contributed to his inability to sustain high-level performance after his 2019 World Series MVP season. DeGrom’s proactive use of biologics and biomechanical retraining offers a stark contrast. Similarly, Jacob deGrom’s teammate Max Scherzer has used some of the same tech—motusSleeve, force plates—but Scherzer is less wedded to the psychological components. DeGrom’s willingness to embrace sports psychology sets him apart, as few pitchers of his stature have been as open about mental training.

Finally, consider two-way star Shohei Ohtani, who has undergone two UCL surgeries and uses PRP but whose rehab is often more aggressive due to his dual role. Ohtani’s path emphasizes strength and power more than deGrom’s, which focuses on efficiency and load management. Both are pushing boundaries, but deGrom’s evolution is particularly instructive for aging pitchers who need to preserve limited arm health. As sports medicine continues to advance, deGrom’s hybrid model—combining imaging, biologics, biomechanics, psychology, and data—may become the standard template for return from major upper-extremity injuries in baseball.

Future Outlook: What’s Next for deGrom’s Health?

Jacob deGrom is currently 36 years old and under contract with the Texas Rangers through 2027 with a team option for 2028. His health will be the single largest factor in determining whether the Rangers’ investment pays off. Based on his latest rehab iteration, the future looks promising—but not guaranteed. His medical team plans to continue refining his regimen with genetic testing to identify predispositions to soft-tissue injuries and tailor his collagen synthesis protocols. They are experimenting with blood flow restriction (BFR) training to build strength in his injured arm without heavy loads, a technique popularized by Gerrit Cole’s recovery from a 2024 shoulder issue.

There is also talk of integrating virtual reality exposure therapy to accelerate return from psychological hesitation after an injury. This would involve deGrom wearing a VR headset and facing virtual hitters in a simulated game environment, gradually increasing the intensity to rebuild his competitive reflexes without the risk of real pitching. While still experimental, pilot programs in the NFL and Premier League soccer have shown reduced rates of re-injury after ACL repairs.

Ultimately, deGrom’s rehabilitation process is a living laboratory for sports medicine. Each injury teaches his team something new, and each recovery builds on the last. If his body holds, deGrom could pitch effectively into his late 30s, much like Verlander did. If not, his approach will still influence how future pitchers are rehabilitated. The key takeaway is that deGrom has evolved from a passive patient to an active participant in his own recovery, using every available tool to outsmart the natural decline of a pitcher’s arm. As he told Sports Illustrated in 2024, “I don’t think about coming back the same. I think about coming back better. The process has taught me to be smarter, not just stronger.”