The 2025 MLB postseason has ushered in a new era of extreme velocity, with a record-shattering 255 pitches clocked at 100 mph or faster, more than double last year’s total. This adrenaline-fueled surge, while thrilling for fans, comes with a stark warning: a significant increase in pitcher injuries, prompting Major League Baseball to implement new scouting restrictions aimed at mandating crucial recovery time for young prospects. This article breaks down the ‘why,’ ‘what now,’ and ‘what’s next’ for baseball’s fastest arms.
The roar of the crowd, the weight of expectation, the sheer adrenaline of October baseball—it all culminates in one undeniable truth: velocity rules in October. The 2025 Major League Baseball postseason has delivered a dizzying display of raw power, setting an all-time record with an astounding 255 pitches thrown at 100 mph or faster. This figure dramatically surpasses last year’s 105 and the previous high of 169 set in 2022, signaling a pivotal moment in the game’s evolution.
The Alarming Ascent of the High Fastball
The trend isn’t limited to just a few outlier pitches. Right-handed relievers, often the shock troops of high-leverage situations, have averaged an eye-popping 96.2 mph with their four-seam fastballs through the World Series opener. This marks a consistent increase from 95.8 mph last postseason and a significant jump from 93.3 mph when Major League Baseball began tracking these metrics in 2008.
“That’s crazy. That’s insane,” remarked Los Angeles Dodgers reliever Tanner Scott, reflecting a sentiment shared across the league. He highlighted a dramatic shift in pitcher development, noting, “You see kids in college throwing 100 (mph) and a couple of years ago they were throwing what, 94, 95?” This speaks to a fundamental change in how pitchers are developed and how the game is played.
The regular season also set records, with pitchers averaging 94.5 mph with four-seam fastballs in 2025, up from 91.9 mph in 2008. Right-handed pitchers, specifically, saw their average climb to 95 mph this year, with relievers leading the charge at 95.6 mph. Toronto closer Jeff Hoffman exemplifies this postseason tick-up, averaging 96.4 mph with his four-seamer in October, a notable increase from his 95.6 mph regular season average.
Adrenaline, Pressure, and the “Empty the Tank” Mentality
What drives this October velocity surge? Players and coaches alike point to the unique crucible of playoff baseball. “A lot of it is adrenaline and knowing that this is it. You’ve got to empty your tank every single night,” Hoffman explained. He firmly believes in the power of speed, stating, “Velocity is king. I know there are a lot of kind of conflicting opinions on that, but it’s harder to hit faster pitches, so it’s important to have your best stuff.”
Dodgers pitching coach Mark Prior echoed this sentiment, emphasizing the stakes. “These are the most significant pitches that anybody’s thrown all year,” Prior said. “A lot of it just happens to do with the pressure of these situations, and I think you see it across baseball in the playoffs. Everybody’s stuff ticks up, for the most part. It seems like their stuff is at a different level.”
The intense atmosphere of playoff games also plays a role. Dodgers reliever Blake Treinen described feeling the “hate” in rival ballparks, which fuels a competitive drive. “The more you get deeper into the playoffs, the more you are just competing with — it’s energy. At this point in the World Series you are trying to empty the tank,” Treinen elaborated, illustrating the maximum effort exerted on the biggest stage.
The Pitcher’s Arsenal: Speed Meets Variety
Despite the growing emphasis on velocity, pitchers are also increasingly relying on a diverse array of offspeed pitches. This postseason, four-seamers accounted for 32.8% of pitches, a decrease from a high of 40.9% in 2014. The overall usage of various pitch types underscores a strategic evolution:
- Sliders: 17.2%
- Two-seamers: 15.2%
- Curveballs: 9%
- Changeups: 8%
- Splitters: 6.5%
- Cutters: 5.9%
- Sweepers: 4.6%
- Slurves: 0.7%
This data suggests that while high velocity remains a powerful weapon, pitchers are pairing it with increased pitch shaping and movement to keep hitters off balance.
The Unseen Cost: A Looming Injury Crisis
The relentless pursuit of velocity comes at a steep price. A study released by Major League Baseball last offseason explicitly concluded that rising velocities, pitch shaping, and an emphasis on maximum effort are the likely causes of the vast increase in pitcher injuries. This grim reality has become a central concern for the league and its players, prompting urgent action.
MLB’s Proactive Steps: Mandating Recovery
In response to the escalating injury crisis, MLB decided last month to implement significant changes to amateur scouting rules. The league now prohibits scouting of many high school prospects for three months during the offseason and of college prospects for two months. This measure is a direct effort to mandate recovery time, acknowledging the toll that year-round, high-intensity pitching takes on young arms.
Commissioner Rob Manfred emphasized the long-term vision behind these changes. “Starting at the bottom is the best way,” Manfred stated, highlighting the importance of addressing the issue at the developmental stages of a player’s career. He confirmed that this initiative is “part of a larger program that we’re going to continue to roll out in an effort to address this issue,” as reported by Associated Press.
The October 2025 Hard Throwers Hall of Fame
This postseason has showcased several pitchers consistently pushing the limits of the radar gun:
- Milwaukee rookie Jacob Misiorowski: Reached 100 mph with 58 pitches, a staggering number that surpasses the entire postseason total as recently as 2018.
- Cincinnati’s Hunter Greene: 28 pitches at 100+ mph.
- Philadelphia’s Jhoan Duran: 25 pitches at 100+ mph.
- Chicago Cubs’ Daniel Palencia: 23 pitches at 100+ mph.
- Detroit’s Tarik Skubal: 22 pitches at 100+ mph.
Highlighting the pinnacle of this velocity era, San Diego’s Mason Miller threw a 104.5 mph called third strike to the Chicago Cubs’ Seiya Suzuki in Game 2 of their NL Wild Card Series. This blistering pitch stands as the fastest postseason pitch ever recorded in the Statcast era.
Even established teams like the Dodgers and Blue Jays are seeing their pitchers dial up the heat. Dodgers pitchers have averaged 96.2 mph with four-seamers in the postseason, up from 94.7 mph during the regular season. Blue Jays pitchers also saw an increase, averaging 95.1 mph compared to 94 mph. Among right-handed relievers in October, Los Angeles is averaging 97.6 mph and Toronto 96.8 mph, showcasing the intense, high-octane nature of playoff pitching.
The Fan’s Dilemma: Thrills Versus Health
For the dedicated baseball fan, this velocity surge presents a complex dilemma. The pure spectacle of a triple-digit fastball is undeniable, adding a layer of excitement and intimidation to every pitch. Yet, the parallel rise in pitcher injuries casts a dark shadow over this thrilling trend. Fans are left to ponder whether the pursuit of peak velocity is sustainable and what the long-term impact will be on player careers and the integrity of the game.
Major League Baseball’s new scouting prohibitions, along with ongoing discussions about pitch counts and recovery protocols, demonstrate a crucial recognition that player health cannot be sacrificed for performance. As the game continues to evolve at a breakneck pace, the balance between pushing the limits of human performance and protecting the athletes who make the game great will remain a central challenge. The velocity rules in October, but the future of the game depends on how wisely that power is managed.
Find more analysis on MLB’s velocity trends and pitcher health from Associated Press. For more information on the broader issue of pitcher injuries, refer to previous reporting by AP MLB.
