A Comprehensive Look at Jacob deGrom's Career Wins and Losses: Context and Analysis

Jacob deGrom's career wins and losses may tell a partial story, but the full picture requires examining his overall dominance, recurring injuries, and the shifting landscape of pitcher evaluation. Since debuting in 2014 with the New York Mets, deGrom has established himself as one of the most electric arms in baseball history, earning two Cy Young Awards and multiple All-Star selections. His win-loss record, while respectable, fails to capture the near-unhittable stretches of his prime. This expanded analysis moves beyond the surface numbers to explore the context, advanced metrics, and external factors that define his legacy, offering a deeper understanding of why his career record demands nuance.

Career Trajectory and Milestones

DeGrom debuted on May 15, 2014, and quickly made an impression by striking out eight Cubs over seven innings. He went on to win the National League Rookie of the Year award that season, posting a 9-6 record with a 2.69 ERA. His early years showed flashes of brilliance, but it was from 2018 through 2021 that he reached an unparalleled level of performance. During that span, he posted a 1.90 ERA with 792 strikeouts in 523 innings, earning back-to-back Cy Young Awards in 2018 and 2019. Despite this dominance, his win-loss record in those years was a modest 32-16, largely due to poor run support from a Mets offense that often struggled to score.

Breakout Season: 2018

In 2018, deGrom finished with a 10-9 record despite leading the league in ERA (1.70) and striking out 269 batters. He became the first pitcher in MLB history to win the Cy Young Award with a sub-.500 win-loss record, a milestone that sparked widespread debate about the value of wins as a metric. His WAR that season (9.0 per Baseball Reference) was the highest in the majors, underscoring his overwhelming individual contribution. That year, he allowed two earned runs or fewer in 24 of his 32 starts, yet the Mets went 11-21 in those games. The disconnect was so stark that advanced metrics like ERA+ (216) and FIP (1.98) became the standard for discussing his value.

2020 and 2021: Peak Performance Amidst Uncertainty

The shortened 2020 season saw deGrom go 4-2 with a 2.38 ERA, but he was limited to 12 starts due to a hamstring injury. In 2021, he was even better: a 1.08 ERA over 15 starts before a forearm injury ended his season prematurely. His strikeout rate (14.3 K/9) was historic, and his FIP (1.10) was the lowest ever recorded for a qualified pitcher. The Mets went just 7-8 in those 15 starts, again highlighting the disconnect between deGrom's performance and his win-loss record. His 2021 season also featured a 0.55 ERA through his first 11 starts, a stretch that included 10 or more strikeouts in nine of those outings. At no point in baseball history had a pitcher sustained such dominance over that many innings, yet his win-loss record during that span was a modest 6-2.

The Limitations of Win-Loss Records

For decades, pitchers were judged primarily by their win-loss record. But modern analysis has shown that wins are heavily influenced by factors beyond a pitcher's control – run support, bullpen performance, defensive efficiency, and luck. deGrom's career win-loss record of 82-57 (through 2023) is solid, but it masks the fact that he has one of the best ERA+ (148) and WHIP (1.012) among active pitchers. FanGraphs' Jacob deGrom page tracks his FIP, xFIP, and WAR, all of which place him in the elite tier alongside legends like Pedro Martinez and Clayton Kershaw. His career WAR per 200 innings (6.0) is higher than any active pitcher with at least 1,000 innings, a statistic that underscores his talent independent of win totals.

The shift toward evaluating pitchers with ERA, FIP, and WAR has made win-loss records increasingly obsolete. deGrom's career is a textbook example: he owns a winning percentage of .590, yet his run support average (3.8 runs per game) is among the lowest for any pitcher with at least 200 starts since 1913, according to research by Baseball-Reference. To put that in perspective, Hall of Fame pitchers like Christy Mathewson and Tom Seaver received over 4.5 runs per start. deGrom's average run support is closer to that of journeymen than of aces, and that stark disparity is the primary reason his win total does not reflect his brilliance.

deGrom's Dominance in Advanced Metrics

Advanced statistics paint a clearer picture of deGrom's elite performance. His career ERA+ of 148 means he has been 48% better than the league average. His WHIP of 1.012 is historically low, and his 11.4 strikeouts per nine innings rank among the best all-time. Perhaps most telling is his FIP (Fielding Independent Pitching), which removes defensive context. deGrom's career FIP is 2.58, indicating that his actual ERA (2.53) closely mirrors his underlying skill. His xFIP (3.02) is slightly higher due to his unusually low home run per fly ball rate, but even that places him in the top 10 among all pitchers since 2014.

WAR and Value

Wins Above Replacement (WAR) captures a pitcher's total contribution. Through 2023, deGrom has accumulated 34.1 WAR (per Baseball-Reference) in just over 1,300 innings. For context, that is similar to the career WAR of Hall of Famer John Smoltz through the same number of innings. His nine-win 2018 season is one of only 19 such performances by a pitcher since 2000. The MLB.com profile notes that his fastball velocity, which averages 99 mph, and his elite slider have consistently ranked among the league's best. His pitch run values (per Baseball Savant) show that his fastball and slider have been worth more than 10 runs above average in multiple seasons, a rare combination.

Comparisons to Peers

When compared to other aces of his era, deGrom's advanced metrics place him in the top tier. Scherzer, Kershaw, and Verlander have more wins but have also benefited from stronger lineups and bullpens. deGrom's WAR per 200 innings (6.0) is higher than all three. However, durability remains the critical difference – those pitchers have thrown 600-1,000 more innings than deGrom, giving them higher counting stats and more opportunities for wins. For example, from 2014 to 2021, deGrom's ERA (2.21) was the lowest in baseball among starters with at least 700 innings, yet his win percentage was just .615, while Scherzer's was .700 and Kershaw's was .670 during similar spans. The gap is entirely attributable to run support and bullpen performance.

The Impact of Injuries

Injuries have been the primary obstacle in deGrom's pursuit of a Hall of Fame resume. Since 2021, he has made only 26 starts due to forearm issues, elbow inflammation, and a shoulder problem that required surgery. The missed time has cost him hundreds of innings and effectively removed him from Cy Young conversations for extended periods. His move to the Texas Rangers on a five-year, $185 million contract in December 2022 was a gamble for both sides: the Rangers hoped to capture his eliteness, while deGrom sought a healthier environment and a better offensive supporting cast.

In 2023, deGrom made only six starts for the Rangers before undergoing Tommy John surgery in June. That injury, his first major elbow procedure, will sideline him for most of 2024. The recurrence of arm troubles raises questions about how many more peak seasons he can deliver. Nevertheless, when healthy, his performance remains unmatched – his 2023 sample of 30.1 innings included a 2.67 ERA and 0.76 WHIP. His fastball averaged 99.2 mph, and he struck out 45 batters while walking only four. That level of dominance, even in a tiny sample, is why teams keep betting on his recovery.

The Injury History in Detail

DeGrom's health issues are not new. He missed time in 2016 with a strained lat, in 2017 with right elbow soreness, and in 2019 with a bout of neck tightness. But the severity escalated after 2021. In July 2021, he was placed on the injured list with forearm tightness, then suffered a setback during a rehab start. That same forearm issue flared again in 2022, limiting him to 11 starts. The Rangers' decision to sign him despite this history was a calculated risk, but the outcome thus far has been disappointing. According to Statcast data, his arm angle and release point have remained consistent when healthy, suggesting that his mechanics are not the root cause of his injuries. Rather, the sheer velocity and torque he generates may simply place excessive strain on his elbow.

Run Support and Team Context

Perhaps no elite pitcher has been more starved for run support than deGrom. From 2018 to 2022, the Mets averaged just 3.5 runs per game in his starts, according to Baseball-Reference game logs. In 28 starts where deGrom allowed two or fewer runs, the Mets lost 10 times. By comparison, Clayton Kershaw received an average of 5.2 runs per start from 2014 to 2019. This disparity explains why deGrom's win total is far lower than his talent would suggest.

The 2022 Mets did provide better support, averaging 4.7 runs per start, but deGrom's own inconsistent health limited him to 11 starts. After his move to Texas, the Rangers – who led the AL in runs scored in 2023 – offered a potent lineup. Unfortunately, deGrom's season was cut short by surgery, so we have only a small sample of what a healthy deGrom could achieve with a strong offense. In his six starts with the Rangers, the team scored 5.3 runs per game, yet deGrom went only 2-0 because his outings were brief (he averaged 5.1 innings). The promise of run support is real, but it cannot materialize wins if the pitcher cannot stay on the mound.

The Worst Offensive Support in Modern History

Research by Baseball-Reference shows that among pitchers with at least 200 starts since 1908, deGrom's average run support of 3.8 runs per game ranks in the bottom 0.5%. Only a handful of pitchers have had less support, most of whom pitched in the dead-ball era. This kind of offensive deprivation has cost deGrom dozens of wins. If he had received league-average support (4.5 runs per game), his career win total would likely be closer to 100-105, with a winning percentage above .650. That would place him in a much more traditional Hall of Fame conversation.

Future Outlook with the Texas Rangers

DeGrom's contract with the Rangers runs through 2027, but his age (36 in 2024) and history of arm injuries create uncertainty. If he returns from Tommy John surgery and recovers full velocity, he could still be a frontline starter. The Rangers' deep lineup and improved bullpen should provide better run support than he had in New York. However, the long layoff and recovery timeline mean that meaningful contribution might not come until 2025. The Rangers have invested heavily in their rotation, and deGrom's health is the key variable in their championship window.

Projecting wins and losses for a post-surgery deGrom is speculative, but advanced projection systems like ZiPS and Steamer suggest that even a diminished version would post an ERA around 3.00 with a strikeout rate near 10 K/9. That would still likely produce a winning record given Texas's offense, but the biggest question is whether he can stay on the mound for 25-plus starts per season. If he does, his career win total could climb past 100, solidifying his legacy as one of the greats of his generation.

Post-Surgery Comps and Probability

Tommy John surgery outcomes for pitchers over 35 are mixed. A study by Driveline Baseball indicates that about 70% of MLB pitchers return to the majors after the procedure, but only 40% regain their pre-injury velocity. For deGrom, whose entire game revolves around elite velocity, a drop of even 2-3 mph would significantly reduce his effectiveness. However, his secondary pitches – particularly his slider and changeup – are so good that he might still be an above-average starter even with a 95-96 mph fastball. The more pressing concern is durability: he has not thrown 150 innings since 2019.

Conclusion

Jacob deGrom's career wins and losses are a poor proxy for his talent. A straightforward look at his 82-57 record might suggest a very good pitcher, but the deeper context reveals a transcendent talent who has been undermined by injuries and weak offensive support. His ERA, FIP, WAR, and strikeout rates place him in the conversation with the best pitchers of all time. Understanding deGrom's career requires looking beyond the box score to appreciate the gap between what he achieved and what he could have done with better fortune. As he rehabs from another major surgery, fans and analysts alike will watch closely to see if he can reclaim his throne – and finally build a win-loss record that matches his dominant repertoire. The story of Jacob deGrom is not about numbers on a scoreboard; it is about the fragility of greatness and the systems we use to measure it.