
Emmanuel Clase, a three-time All-Star and one of Major League Baseball’s top closers, has encountered difficulties recently, bringing his cutter struggles and slider effectiveness decline into the spotlight. His struggles became especially apparent following a blown save against the Seattle Mariners, raising concerns about his ability to maintain his previous dominance on the mound.
Prior to that game, Clase had shown signs of improvement. Since late April, he allowed only three runs, just one earned, which offered hope that he might be regaining his form after an uneven start to the season. Still, these moments of redemption illustrate only part of a more complicated situation surrounding his pitching effectiveness.
A Closer Look at Clase’s Pitch Performance Metrics
Brandon Glick, a noted analyst of pitching trends, highlights troubling shifts in the performance of Clase’s signature pitches—the cutter and the slider. Last season, Clase’s cutter was highly effective, producing a low .150 batting average against and a .194 weighted on-base average (wOBA) over 765 cutters thrown. His slider was even more dominant, holding opposing batters to a .145 average and a .148 wOBA across close to 200 pitches. These figures marked him as one of the premier relievers in the league.
However, this year’s data indicates a decline. Clase has reduced his cutter usage by about 10%, compensating by throwing more sliders. This change suggests a possible lack of confidence in his cutter and has caused speculation among analysts and fans regarding whether his adjustments will restore his previous level of dominance.

Implications of Pitch Selection Changes on Clase’s Performance
The shift in pitch distribution is significant, not only reflecting statistical performance but also the mental and tactical adjustments Clase is making amid adversity. Decreasing reliance on his cutter may impact his overall effectiveness and vulnerability to hitters, potentially altering how opposing batters approach him in critical moments.
Clase’s decline in pitch effectiveness and evolving strategy come at a moment when consistency is crucial for closing out games and securing wins for his team.
Looking Ahead: What the Future Holds for Clase’s Role as Closer
The remainder of the season will test whether Emmanuel Clase can regain the mastery that made him a three-time All-Star and a feared reliever. Overcoming these challenges will require refining his mechanics and rebuilding confidence in his signature pitches. The outcome will have notable consequences for his team’s bullpen strength and postseason prospects.
Clase’s journey this season exemplifies the fluctuating nature of professional sports, where even top performers face periods of uncertainty. His resilience and ability to adapt will be critical as he strives to reestablish himself among the league’s elite closers.
The baseball community remains attentive, awaiting to see if Clase can reverse his current trajectory, restore the effectiveness of his cutter and slider, and continue to shape his legacy at the highest level.