Roki Sasaki, one of MLB’s most hyped rookies and a key addition to the Los Angeles Dodgers, has recently faced an unexpected hurdle. After a promising start to his first season in the majors, the Japanese pitching phenom landed on the injured list with a right shoulder impingement. This setback, while concerning, offers a moment to examine his impact, the path forward, and what Dodgers fans can expect next.

Roki Sasaki delivers a pitch for the Los Angeles Dodgers.

Who Is Roki Sasaki?

Roki Sasaki skyrocketed to fame in Japan with the Chiba Lotte Marines, where his fastball regularly touched 100 mph. His mastery on the mound drew comparisons to legends and set the stage for a high-profile move to MLB. Sasaki joined the Dodgers in January 2025, bringing with him high expectations and a resume that included a 2.10 ERA over four seasons in Nippon Professional Baseball (NPB).

Early Promise and Challenges in MLB

Sasaki wasted no time making an impression. In his major league debut in Tokyo, he wowed spectators by consistently throwing near triple digits. However, the adjustment hasn’t been without its difficulties. Control issues and a loss of velocity began surfacing as the season progressed. In eight starts, Sasaki posted a 4.72 ERA with 24 strikeouts over 34⅓ innings. Walks, however, closely matched his strikeout total, revealing an ongoing adaptation to MLB hitters and play style.

For a deeper statistical breakdown of Sasaki’s early MLB performance, MLB Trade Rumors discusses his numbers and historical injury concerns.

Shoulder Injury: How It Happened

The turning point came after Sasaki’s start against the Arizona Diamondbacks, where he threw four innings and gave up five runs. He felt increasing soreness in his arm— a sensation familiar from a similar injury sustained in Japan. Scans confirmed a right shoulder impingement, prompting the Dodgers to act quickly and place him on the IL.

ESPN reports that Dodgers manager Dave Roberts said the team is optimistic. They aim to give Sasaki rest and ensure his delivery returns to form before he picks up a baseball again. There is currently no set timeline for his return, but the hope is that a break will help him regain health and velocity.

Impact on the Dodgers’ Rotation

Sasaki’s injury is the latest in a string of blows to the Dodgers’ pitching staff. Already missing stars like Blake Snell and Tyler Glasnow, the team’s rotation depth is being tested. Fortunately, veteran Clayton Kershaw is poised to return, helping to fill the gap as the team navigates a challenging stretch. For a comprehensive overview of the rotation’s current state, CBS Sports provides a full injury breakdown and pitching depth chart.

Looking Ahead: What’s Next for Roki Sasaki?

Despite this setback, both the Dodgers and Sasaki remain focused on his long-term health and development. At only 23 years old, and with such extraordinary talent, there’s every reason to believe that Sasaki will bounce back. The time on the injured list may serve as a much-needed reset, ensuring that he can contribute at full strength as the Dodgers chase another World Series appearance.

Conclusion

Roki Sasaki’s journey in MLB is just beginning, and while injuries are an unfortunate part of any athlete’s career, his resilience and raw potential remain unquestioned. Dodgers fans—and baseball lovers everywhere—will be keeping a close watch on his rehab and return. To stay updated on his progress and team news, keep following trusted sources and official updates. Sasaki’s chapter in the majors has only just begun, and the baseball world eagerly awaits his healthy return to the mound.