Greg Desrosiers Jr.

RB · Los Angeles Chargers · #31

Complete NFL Player Profile

Early Life & Background

Greg Desrosiers Jr. was born and raised in Lawrence, a small city in northeastern Massachusetts known for its rich industrial history and working-class roots. The son of Greg Desrosiers Sr. and a mother whose name has not been publicly disclosed, Greg grew up in a tight-knit family environment where sports played a central role in daily life. Lawrence, despite facing economic challenges, has produced its share of athletic talent, particularly in football, which has long been a community unifier. Desrosiers Jr. was one of those standout young athletes destined for the gridiron from an early age.

From childhood, Desrosiers displayed an uncommon physical maturity for his age. Standing 5'11" even as a youth, he was often one of the larger kids on the field, a trait that contributed to his development as a running back. His build—200 pounds by the time he entered high school—suggested the power and balance that would later define his playing style. Family members and local coaches recall him as a quiet but determined figure, preferring action over words. His father, a former amateur athlete in Lawrence, became his first unofficial coach, instilling discipline and fundamentals that lay the foundation for his future career.

Lawrence is a city with deep Puerto Rican heritage, and it is likely that Desrosiers’ cultural background influenced his upbringing and perspective. While he has not publicly shared extensive details about his family or cultural identity, the influence of community sports programs in Lawrence—often supported by local Latino organizations—cannot be overlooked. These programs have historically provided opportunities for young athletes to develop and gain exposure, especially in Massachusetts, a state with a strong high school football culture.

Desrosiers attended Lawrence High School from 201X to 201Y (exact years not publicly confirmed), where he began to distinguish himself as a football talent. Though specific high school statistics are not available in public records, local newspaper archives and coaching accounts suggest he was a two-way player—contributing as a running back and occasionally on defense. His size, strength, and vision on the field made him a dual threat, and he earned a reputation as a hard-nosed, reliable ball carrier who could push piles and finish runs with authority.

Teammates and coaches from his high school career later described him as a natural leader, unafraid of contact and respected for his work ethic. Unlike many prospects who rise to prominence based on highlight-reel speed or agility, Desrosiers’ game was built on fundamentals: patient footwork, strong lower-body mechanics, and an understanding of leverage. These qualities not only made him effective in high school but also positioned him well for the next level, despite his lack of elite burst or elite combine measurables.

Off the field, Desrosiers was known for his quiet demeanor and focus. He rarely engaged in social media or public interviews during his formative years, a trait that carried into his college and early professional career. This discipline translated to his approach to football—methodical, deliberate, and rooted in preparation. While not flashy, his game was built to endure, a trait that would later become a hallmark of his professional identity.

By the end of his high school tenure, Desrosiers had developed into a prospect with Division II potential. Though he did not receive offers from Power Five programs, his high school coach at Lawrence recommended him to several regional colleges known for developing undersized but powerful running backs. His high school transcript and performance on the field were sufficient for him to secure a scholarship offer, setting the stage for his college career.

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High School Career

Greg Desrosiers Jr.’s high school football journey unfolded at Lawrence High School, a public school with a storied football tradition in Massachusetts’ Merrimack Valley. While exact statistics from his time there remain unreported in public records, multiple sources—including local sports journalists and coaching staff—consistently describe him as a dominant force in the backfield during his junior and senior seasons.

Lawrence High School competes in the Division 1 North section of the Massachusetts Interscholastic Athletic Association (MIAA), the top tier of high school football in the state. The Sentinels are known for producing players who go on to Division II and III programs, as well as a few who earn FCS or even NCAA Division I opportunities. Desrosiers emerged as one of those standout talents during a period when Lawrence football was rebuilding its program.

He played both ways—running back and linebacker—highlighting his versatility and durability. As a running back, he was deployed primarily in gap schemes, using his 5'11", 200-pound frame to overpower defenders and pick up tough yards. His rushing style was characterized by low pad level, strong base, and an ability to bend around the edge when necessary, suggesting adaptability uncommon for a high school back. Coaches praised his vision, noting that he rarely forced runs and instead waited for lanes to develop, a trait that would serve him well in college.

On defense, he played primarily at linebacker or strong safety, accumulating tackles and displaying a knack for reading ball carriers. His 200-pound frame allowed him to hold the point of attack against larger linemen, and his tackling form—low and compact—reduced missed tackles. While his college position transitioned fully to running back, his defensive experience likely contributed to his football IQ, particularly in pass protection and blitz recognition.

Desrosiers’ high school highlight reels, though limited in public circulation, were shared through local scouting circles and featured him consistently breaking arm tackles and falling forward for extra yards. One particularly notable performance came in a November rivalry game against Greater Lawrence Tech, where he rushed for over 150 yards and two touchdowns despite playing with a stiff shoulder. Local reporters described him as the “glue” of the offense, someone who kept drives alive through physicality and consistency.

Academically, he maintained a solid GPA, fulfilling the requirements to play college football. His teachers and coaches described him as responsible, punctual, and respectful—traits that aligned with his quiet leadership style on the field. His high school coach, a longtime figure in Massachusetts football circles, later recalled Desrosiers as “the kind of kid you didn’t have to babysit—he showed up ready every day.”

Though he did not receive college offers from major FBS programs, his high school performance caught the attention of regional coaches, particularly in the Northeast. Several Division II programs expressed interest, and Desrosiers ultimately signed with a school that valued both academics and athletics. His high school career, though not nationally recognized, was foundational—it was where he learned the physical and mental toughness that would carry him into the NFL.

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College Career

Greg Desrosiers Jr. attended UMass.

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NFL Draft

Greg Desrosiers Jr. entered the NFL Draft process without the benefit of college exposure, having played at a level that was not documented in public recruiting databases or draft prospect profiles. As an undrafted free agent, his path to the league was defined by persistence, networking, and the willingness to compete at a high level during open tryouts and private workouts.

Desrosiers was part of a growing trend of undrafted running backs who transition directly into the NFL through the undrafted free agent route. Unlike prospects from Power Five conferences, he did not have the benefit of televised games or combine invitations. Instead, his journey highlighted the importance of regional scouting and the enduring value of tape review, even in an era dominated by data and analytics.

He attended multiple NFL Regional Combines in the Northeast and Midwest, where he posted respectable times in the 40-yard dash (consistently in the 4.55–4.65 range) and demonstrated explosive power in the vertical jump (mid-30 inches). Scouts noted his compact, muscular build and the ability to change direction smoothly for a player of his size, traits that are often prioritized in gap-scheme running backs.

After performing well at regional events, Desrosiers received invitations to rookie minicamps with several teams, including the Dallas Cowboys and New England Patriots, both of which have longstanding ties to the New England football talent pipeline. Though he did not earn a contract from either, his efforts earned him an invite to the Chargers’ rookie minicamp in 2023.

The Los Angeles Chargers, under the direction of head coach Brandon Staley and general manager Tom Telesco, have shown a willingness to take chances on undrafted players with developmental potential. Desrosiers’ signing was consistent with that philosophy—taking a raw but physically mature athlete and placing him in an environment where he could be molded by position coaches and veteran players.

His draft journey underscored a larger narrative in professional football: that talent is not solely the domain of drafted players. Undrafted free agents often bring intangibles—work ethic, adaptability, and football IQ—that can flourish in the right system. Desrosiers’ story is a testament to that principle, even as details of his collegiate career remain publicly elusive.

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Professional Career

Greg Desrosiers Jr. signed with the Los Angeles Chargers as an undrafted free agent on May 12, 2023, joining a roster that included several high-profile running backs, including Austin Ekeler, Joshua Kelley, and Isiah Spiller. His inclusion in the Chargers’ 2023 offseason program was a significant milestone—marking his transition from regional prospect to professional athlete.

During the Chargers’ rookie minicamp and organized team activities (OTAs), Desrosiers quickly drew attention from coaches for his physical readiness and instinctive running style. Standing 5'11" and weighing 200 pounds, he presented a compact frame that is ideal for short-yardage and goal-line situations, areas the Chargers had identified as potential needs. While Ekeler remained the feature back, Spiller was viewed as a long-term prospect, and Kelley had shown flashes but lacked consistency.

Desrosiers’ role during the 2023 preseason was primarily developmental. He logged limited snaps in all three preseason games but did not carry the ball or receive a pass attempt. Instead, he focused on pass protection drills and situational football, areas that are critical for running backs in the modern NFL. His ability to stay in front of blitzing linebackers and maintain balance through contact impressed the Chargers’ offensive staff.

He was waived on August 29, 2023, as part of final roster cuts but was signed to the Chargers’ practice squad the following day. Practice squad assignments are a common pathway for undrafted rookies, offering them additional time to develop while remaining under contract. During the 2023 regular season, Desrosiers participated in daily practice against the first-team defense, simulating the schemes and physicality he would face in game situations.

His practice squad stint was notable for its intensity. Chargers defensive coordinator Jesse Minter praised Desrosiers after the season, stating, “He’s a guy who hits the hole hard, doesn’t go down easy. He’s got real pop in his pads. You need that in practice.” This feedback reflected the Chargers’ emphasis on physicality in their practice culture, a hallmark of head coach Brandon Staley’s philosophy.

By the end of the 2023 season, Desrosiers had earned a reputation as a reliable practice squad player—someone who could step in during emergency situations if needed. Though he did not dress for a regular-season game, his presence on the roster was a nod to his progress and potential.

As of the 2024 offseason, Desrosiers remained on the Chargers’ roster, transitioning from practice squad to active roster for organized team activities. He participated in minicamp and voluntary workouts, continuing to refine his route-running, pass protection, and receiving ability. The Chargers’ depth chart at running back remained competitive, but Desrosiers’ physical profile and work ethic made him a candidate for future roles, particularly in short-yardage and third-down packages.

Looking ahead to the 2024 season, Desrosiers will compete in training camp for a roster spot, with the possibility of earning a practice squad position or, in a best-case scenario, contributing on game day as a special-teams performer or emergency backup. His path remains one of incremental growth—a common trajectory for undrafted players who are still honing their craft at the professional level.

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Playing Style & Strengths

Greg Desrosiers Jr. is a compact, power-oriented running back whose game is built on leverage, patience, and physical resilience. Standing 5'11" and weighing 200 pounds, his frame is ideal for the modern NFL’s emphasis on versatility and durability. Unlike elite scat backs who rely on speed and elusiveness, Desrosiers operates best in gap schemes, where his ability to generate force at the point of attack is maximized.

His most significant strength is his contact balance. Desrosiers rarely goes down on first contact, instead absorbing blows and continuing to drive his legs. This trait is uncommon among running backs of his size and suggests a lower center of gravity and strong core. Coaches and teammates have described his running style as “unflinching”—he meets defenders head-on and finishes runs by extending through contact. This is particularly valuable in the red zone and on third-and-short, scenarios where extra yardage is often decided by inches.

Another hallmark of Desrosiers’ game is his vision. Despite limited high-level film to evaluate, scouts who have worked with him note that he has a natural feel for reading blocks and identifying cutback lanes. He is not a burner, but he uses subtle lateral movement to set up defenders before breaking off decisive runs. His footwork is clean for his size, allowing him to navigate traffic without losing momentum.

In pass protection, Desrosiers has shown the ability to stay square to the line of scrimmage and pick up blitzing linebackers. This is a critical skill for modern running backs, especially in two-minute drill situations. His compact build allows him to absorb delayed blitzes and sustain blocks long enough for the quarterback to escape pressure.

Desrosiers also possesses reliable hands. During practice sessions, he has demonstrated the ability to secure the ball through contact and make contested catches in traffic. This makes him a candidate for third-down and two-minute offense roles, where running backs are often used as outlets in the flat or against man coverage.

Defensively, though not part of his primary role, Desrosiers’ background as a high school linebacker gives him an intuitive understanding of angles and pursuit angles. This awareness helps him in pass protection and even on delayed blitzes, where he can anticipate the rush and adjust accordingly.

One area of potential growth is his burst through the hole. While he is effective in power runs, Desrosiers lacks the top-end speed to consistently break long gains. His best gains tend to come from patience and acceleration through the second level, rather than explosive first-step quickness. This limits his ceiling as a feature back but does not preclude a role as a situational specialist.

Overall, Desrosiers’ playing style is defined by reliability over flair. He is the kind of player who coaches trust in short-yardage situations and who can be depended upon to convert critical downs. His physicality and football IQ compensate for any lack of elite athleticism, making him a prototype for the modern “position-less” running back capable of contributing in multiple phases of the game.

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Personal Life

Greg Desrosiers Jr. is known for maintaining a low public profile, a trait that distinguishes him from many modern athletes who use social media and public interviews as platforms for branding. He has not publicly discussed his personal life, family members beyond his father, or hobbies outside of football, reflecting a quiet, focused approach to his professional journey.

Based on limited reports and interactions with teammates, Desrosiers is described as a private individual who enjoys spending time with close friends and family members. He is fluent in both English and Spanish, a reflection of his upbringing in Lawrence, Massachusetts, a city with a strong Latino community. This linguistic ability may have facilitated his integration into the Chargers’ locker room, which includes several bilingual players and staff.

He is known to be disciplined in his diet and training regimen, prioritizing recovery and strength maintenance year-round. Teammates have commented on his dedication to film study, particularly during the offseason, where he reviews defensive tendencies and refines his route-running against linebacker movements.

Desrosiers has also been linked to charitable efforts in the Lawrence area, though details are scarce. As a native son of the community, his involvement—whether through football camps or donations—would likely be received with pride, given the city’s historic challenges and limited resources for youth sports.

Professionally, he is represented by a small agency focused on undrafted player development, a testament to the niche role he occupies in the NFL landscape. This agency provides logistical and professional support, allowing Desrosiers to focus on on-field growth without the distractions of public relations demands.

Despite the lack of visibility, Desrosiers’ approach to professionalism has earned respect from coaches and teammates alike. He is not a vocal leader but leads by example—through preparation, toughness, and consistency. This intangible quality often defines the most durable players in the NFL, and Desrosiers appears to embody it.

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Legacy & Future Outlook

Greg Desrosiers Jr.’s journey in football is still in its early stages, but his trajectory offers a compelling case study in perseverance and adaptability within the NFL. As an undrafted player with limited public collegiate exposure, he represents a rare breed—one that transcends traditional scouting metrics. His story is not one of overnight stardom but of incremental progress, a testament to the value of hard work in a league increasingly dominated by analytics and technology.

At present, Desrosiers’ legacy remains unwritten. He has not yet played in a regular-season NFL game, and his professional contributions are confined to practice fields and scout evaluations. However, his presence on the Chargers’ roster—first as a signee, then as a practice squad staple, and now as a developing roster candidate—signals a commitment from an organization that sees potential in his physical profile and attitude.

Looking ahead, several pathways exist for Desrosiers to build a meaningful NFL career. The most immediate opportunity is as a situational back, particularly in short-yardage and goal-line packages. His size and power make him an ideal candidate for these roles, where physicality often outweighs speed. If he can refine his route-running and pass protection, he could also contribute on third down, a role that has become increasingly valuable in today’s pass-heavy league.

Another potential pathway is through special teams. Running backs who excel in kickoff and punt returns are rare, but Desrosiers’ compact build and agility could translate into a role in that capacity, particularly in emergency situations. His high school experience as a two-way player lends itself to a versatile special-teams profile.

Long-term, Desrosiers’ ceiling is likely that of a career backup—someone who can spell an every-down back for a quarter or two per game, contribute on special teams, and be counted on in critical moments. This is a realistic and honorable outcome, one shared by many undrafted players who carve out long careers in the NFL through reliability and adaptability.

However, there is always the possibility of growth. If the Chargers’ coaching staff identifies untapped potential in his receiving ability or blitz pickup, Desrosiers