What Defines an Ace Pitcher in 2025? A Look at Modern Success

Baseball has undergone significant transformations over the decades, and the role of the ace pitcher is no exception. In 2025, the expectations for starting pitchers starkly contrast with those of the past. The era of 20-game winners and complete games is fading, prompting a reevaluation of what defines success for today’s star hurlers.
The statistics reveal a dramatic shift. Notably, no pitcher has completed more than one nine-inning game this season, and an average pitch count of around 100 is now the norm. Historically, pitchers like Dwight Gooden, who in 1985 achieved a remarkable 24-4 record with a 1.53 ERA, showcased a level of dominance that seems almost unattainable today. In comparison, current leading pitchers like Paul Skenes and Tarik Skubal are redefining the parameters of pitching excellence in a very different landscape.
Evaluating Modern Performance
Skenes, the frontrunner for the NL Cy Young Award, boasts an impressive 2.03 ERA and leads the National League in both strikeouts and Wins Above Replacement (WAR). His performance, however, is marked by a win-loss record of just 10-10, a stark contrast to the win-centric accolades of pitchers in previous eras. Skubal, who is favored to repeat as the AL Cy Young Award winner, faces similar challenges with only 13 wins and the possibility of not reaching 200 innings pitched, echoing a broader trend in pitching management.
While historical pitchers routinely completed games and recorded high win totals, the modern game emphasizes dominance over shorter outings. This season, only 12 complete game shutouts have been recorded across the league, highlighting the decline of the complete game. The last pitcher to win 20 games was Justin Verlander in 2019, reflecting a significant shift in expectations.
Comparing Generations of Aces
To understand the evolution of the ace pitcher, a comparison across the decades is enlightening. In 1975, the average ace posted a record of 20-12 with a 2.69 ERA, completing more than half of their starts. This was a time when pitchers regularly approached 300 innings in a season, a feat virtually impossible for today’s pitchers.
Fast forward to 1985, when the emergence of secondary pitches became crucial. The average ace that year maintained an ERA of 2.54 with a significant strikeout rate. The dynamics of pitching were evolving, but the emphasis on wins remained a key metric for success.
In 1995, the introduction of performance-enhancing drugs began to alter the landscape, with pitchers navigating a high-offense era. The aces of this time displayed a notable increase in strikeouts, indicating a shift towards overpowering hitters rather than relying solely on durability and complete games.
The early 2000s saw further evolution, with pitchers like Roy Halladay and Roger Clemens illustrating a new paradigm where strikeout rates soared and control became paramount. By 2015, the strikeout rate for aces climbed to over one per inning, reflecting the growing importance of strikeouts as a measure of pitching success.
As we assess the current crop of aces in 2025, including Skenes and Skubal, it is essential to recognize that their achievements, while perhaps less traditional, are nonetheless significant. The average ace this season has a record of 13-6, with a 2.65 ERA and an impressive strikeout count, despite fewer innings pitched.
The evolution of the game has led to a redefinition of what it means to be an ace. Today’s pitchers are not only expected to excel in dominant stretches but to do so within the constraints of a game that increasingly prioritizes bullpen management and pitch counts.
In conclusion, while the historical benchmarks of pitching success may have shifted, the talent and effectiveness of today’s pitchers like Skenes and Skubal remain undeniable. As the game continues to evolve, so too must our understanding of what it means to be a true ace in the modern era of baseball.