Astros pitcher Tatsuya Imai blames American lifestyle for arm fatigue

Houston Astros pitcher Tatsuya Imai, sidelined with arm fatigue, said tests showed no significant injury and pointed to challenges adjusting to life in the United States. The Japanese right-hander, in his first MLB season, noted differences in travel and eating habits compared to Japan. He expects to build arm strength and return soon.

Tatsuya Imai was placed on the injured list Monday with arm fatigue after walking four of seven batters in his most recent start. The 27-year-old right-hander told reporters Tuesday, including those from The Athletic, that medical tests returned positive results with no major damage. Speaking through interpreter Shio Enomoto, Imai said he will focus on building arm strength before rejoining the team. He attributed the issue partly to adapting to the 'American lifestyle,' citing differences like longer travel and eating dinner at the stadium rather than the hotel after games, as was customary in Japan with the Seibu Lions. Imai signed a three-year, $54 million contract with the Astros this offseason after posting a 3.07 ERA over nine seasons in Japan, including 1.92 ERA in 24 starts last year. The Astros, who snapped an eight-game losing streak with a 7-6 win over the Colorado Rockies on Tuesday, sit at 7-11 in the AL West basement. They are also missing ace Hunter Brown (shoulder), starter Cristian Javier (shoulder), shortstop Jeremy Peña (hamstring), closer Josh Hader (biceps) and center fielder Jake Meyers (oblique). This marks uncharted territory for Houston in directly signing and assimilating a player from Japan.

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Houston Astros introduce Japanese pitcher Tatsuya Imai at Daikin Park press conference.
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Five days after agreeing to a three-year, $54 million contract with Japanese right-hander Tatsuya Imai, the Houston Astros formally introduced the 27-year-old at Daikin Park on January 5, 2026. The three-time NPB All-Star expressed excitement about chasing a World Series, while team executives highlighted expanded Asian scouting efforts.

Houston Astros rookie right-hander Tatsuya Imai traveled back to Houston on Saturday after experiencing right arm fatigue following Friday's 9-6 loss to the Seattle Mariners. Imai recorded just one out in the game, struggling with command. No injury signs appeared during or immediately after the outing.

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The Houston Astros placed shortstop Jeremy Peña on the 10-day injured list with a Grade 1 right hamstring strain and pitcher Tatsuya Imai on the 15-day injured list with right arm fatigue on Monday in Seattle. The moves exacerbate a seven-game losing streak and mounting pitching injuries, following Imai's return to Houston for testing after Friday's rough outing.

As their posting windows near closure, Japanese free agents Tatsuya Imai and Kazuma Okamoto are holding in-person meetings with MLB clubs in Los Angeles this week. The 27-year-old right-hander Imai faces a Friday deadline, while 29-year-old infielder Okamoto has until Sunday. Both players, coming off strong NPB seasons, have drawn interest from multiple teams seeking to bolster their rosters.

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Japanese pitcher Kona Takahashi, posted for MLB free agency by the Saitama Seibu Lions, might opt to return to Nippon Professional Baseball instead of signing in the majors. While teammate Tatsuya Imai joined the Houston Astros, Takahashi's negotiating window closes soon with only one known offer. A return to Seibu could position him better for unrestricted free agency next year.

Japanese slugger Munetaka Murakami faces a December 22 deadline to sign with an MLB club after being posted by the Yakult Swallows. His market remains unclear, with limited buzz around potential suitors despite praise for his power potential. If no deal is reached, he would return to Japan for the 2026 season.

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Houston Astros pitcher Hunter Brown has been diagnosed with a grade 2 right shoulder strain and will refrain from throwing for a few weeks. The team placed him on the 15-day injured list for the first time in his career. Manager Joe Espada called it tough news but noted the issue is muscular with no ligament damage.

 

 

 

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