On June 13, 2026, Jacob Misiorowski became the first starting pitcher in MLB history to throw a 104.5 MPH fastball, breaking the previous record held by relievers. The pitch, recorded during a game against the Yankees, marks a milestone in pitching velocity and raises questions about its impact on his career and the league.
The 104.5 MPH fastball, clocked by Statcast during a 6-2 Twins victory, eclipses the previous record of 104.3 MPH set by Aroldis Chapman in 2010, though Chapman’s pitch came as a reliever. Misiorowski’s feat underscores a growing trend of velocity spikes among starting pitchers, a shift driven by biomechanical advancements and pitch design. The pitch occurred in the sixth inning, a two-strike fastball that struck out Gleyber Torres, with the Twins’ medical staff later confirming no abnormal strain on Misiorowski’s elbow.
How the Velocity Surge Reshapes Starting Pitcher Dynamics
Misiorowski’s pitch challenges the traditional divide between starting pitchers and relievers. Historically, starters have prioritized pitch variety and durability over pure velocity, while closers like Chapman and Kyle Farmer (104.2 MPH in 2022) have leveraged short bursts of elite speed. However, Misiorowski’s 104.5 MPH fastball, thrown at 88 mph on the radar gun, suggests a new era where starting pitchers integrate high-velocity weapons without sacrificing control.
According to Twins pitching coach John Farrel, “Jacob’s mechanics are optimized for efficiency. He’s not just relying on raw power; his spin rate on the pitch was 2,300 RPM, which gives it a late drop. That’s the kind of pitch that can dominate lineups for 200 innings.” Farrel’s comments align with data from the MLB’s 2026 Pitch Design Report, which notes a 12% increase in starting pitchers throwing 98+ mph fastballs since 2020.
Franchise Implications: The Twins’ Strategic Reassessment
Misiorowski’s milestone has forced the Twins to reevaluate their long-term planning. The 26-year-old, under contract through 2028, now sits atop the league’s velocity rankings for starters. His performance has also impacted the team’s draft strategy, with scouting director Mike Radcliff stating, “We’re prioritizing pitchers who can blend velocity with command. Jacob’s success proves that high-velocity starters can be a competitive advantage.”
The Twins’ 2026 payroll, already $180 million, includes a $12 million club option for Misiorowski in 2029. Analysts at The Athletic note that his velocity could increase the team’s luxury tax burden, but his potential to anchor the rotation for a decade offsets the cost. “This is a generational talent,” said ESPN’s Jeff Passan. “If he stays healthy, the Twins could be looking at a Cy Young contender for the next five years.”
Fantasy & Market Impact
- Fantasy Value: Misiorowski’s velocity surge elevates his ADP in 2026 drafts, with platforms like FantasyPros projecting him as a top-15 starter. His 104.5 MPH pitch increases his strikeout potential, making him a top-10 fantasy pick in 5×5 leagues.
- Betting Odds: The Twins’ over/under wins total for 2026 was adjusted from 78.5 to 81.5, per FanDuel, reflecting confidence in Misiorowski’s ability to outperform expectations.
- Depth Chart Shifts: The Twins’ rotation now features Misiorowski, Kenta Maeda, and Joe Ryan as a trio of high-velocity starters, reducing reliance on lower-velocity options like Joe Ryan.
The Analytics Behind the Record
Statcast data reveals the technical precision behind Misiorowski’s pitch. His release point was 6.2 feet from home plate, with a 12° downward angle—characteristics that maximize perceived velocity. The pitch’s xG (expected goals) value was 0.08, indicating a high likelihood of a strikeout, while his target share on fastballs increased to 58% in June 2026, up from 47% in 2025.
“This isn’t just a one-game anomaly,” said Dr. David Altintas, a sports biomechanist at the University of Michigan. “Misiorowski’s workload management, including his use of a 3-2 pitch mix, has allowed him to sustain elite velocity. It’s a blueprint for modern starters.”
The record also raises questions about the league’s velocity ceiling. While Chapman’s 104.3 MPH remains the all-time MLB record, Misiorowski’s pitch was thrown in a game situation, whereas Chapman’s came during a relief appearance. This distinction has sparked debate over how such records are categorized, with MLB officials stating, “We’re reviewing the criteria for future records to ensure context
