Mookie Betts Embraces Yoshinobu Yamamoto's Training Methods

Dodgers shortstop credits improved defense to unique workout routine

Mar. 17, 2026 at 11:04pm

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Mookie Betts, the 33-year-old Dodgers shortstop, has adopted the training methods of his teammate Yoshinobu Yamamoto and Yamamoto's personal trainer Osamu Yada. Betts credits this new regimen, which includes javelin throwing, yoga, and other unconventional exercises, for his improved defensive play at shortstop. After a down year in 2025, Betts is looking to bounce back and return to MVP-caliber form.

Why it matters

Betts' willingness to embrace unorthodox training methods shows his dedication to improving his game, even at this stage of his career. The Dodgers are counting on Betts to anchor their lineup and defense, so his offseason adjustments could have a significant impact on the team's success.

The details

Betts said he's not fully committed to Yada's entire routine, but he does the stretch routine Yada taught him and throws javelins every day. Betts believes the javelin throwing has helped improve his arm strength and ability to make plays in the field. After grading as a below-average defender in 2024, Betts saw a sizable improvement last season, leading MLB shortstops in Defensive Runs Saved and placing in the top-third in Outs Above Average.

  • Betts returned to Camelback Ranch over the weekend after his wife gave birth to their third child.
  • Betts is hitting .316 in Cactus League play so far, including a home run in Sunday's split-squad win over the Cubs.

The players

Mookie Betts

A 33-year-old shortstop for the Los Angeles Dodgers who is looking to bounce back from a down year in 2025.

Yoshinobu Yamamoto

A Japanese baseball player who signed a $300 million contract with the Dodgers and introduced Betts to his unique training methods.

Osamu Yada

Yoshinobu Yamamoto's personal trainer, who Betts has worked with to improve his defense.

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What they’re saying

“I just want to get better. I'm not content with being where I'm at. I want to continue to get better in life and everything, and you know, be able to kind of teach my son how to be great. You know, I've got to go through it first. When you're open-minded, there's endless possibilities.”

— Mookie Betts (latimes.com)

“I'm not fully in his whole routine. But I wake up every morning and do my stretch routine that Sensei showed me, throwing the javelins every day. I think throwing javelins is the reason why I can make a play in the hole like that and throw it in the air on a line. I'm really grateful for Yoshi and Sensei, because they have definitely changed my perspective, changed my life, changed my game.”

— Mookie Betts (latimes.com)

“So I mean, Yoshi came over and [got] $300 million, and he hadn't even thrown a pitch over here. So, I'm pretty sure he does something right.”

— Mookie Betts (latimes.com)

What’s next

Betts will continue to work with Yada Sensei on his training regimen as he looks to build on his improved defensive play and regain his offensive form ahead of the 2026 season.

The takeaway

Mookie Betts' willingness to embrace unorthodox training methods shows his dedication to improving his game and adapting to the changing demands of major league baseball. His partnership with Yoshinobu Yamamoto and Osamu Yada could serve as a model for other players looking to take their performance to the next level.