The Houston Astros have bolstered their pitching staff with the addition of Japanese pitcher Tatsuya Imai, marking the likely final move in their offseason overhaul. Despite the probable loss of Framber Valdez to free agency, the team has added three starting pitchers and built significant depth to address last season's injury woes. Manager Joe Espada expressed excitement about the group's potential to ease pressure on the bullpen.
The Houston Astros' rotation for the 2026 season will be anchored by Hunter Brown, Tatsuya Imai, Cristian Javier, and Spencer Arrighetti. Newcomers Ryan Weiss and Mike Burrows, along with veteran Lance McCullers Jr., are set to fill additional spots, while Jason Alexander, AJ Blubaugh, Colton Gordon, Nate Pearson, and J.P. France round out the depth options—though Blubaugh and Pearson may shift to the bullpen. Last season, Houston relied on 15 starting pitchers due to injuries, but the team now has protections in place. Ronel Blanco and Hayden Wesneski are expected to return from Tommy John surgery in the second half of the year.
Manager Joe Espada highlighted the group's strengths during a recent discussion. “I am really excited,” Espada said. “We’re in a really good spot right now. I think these are guys that can potentially go deep into games, so it takes some pressure off our bullpen. Imai has been able to show that in the past. … It’s really exciting right now.”
To manage a demanding early schedule—26 games in 28 days, including a 10-game road trip out west—the Astros plan to start with a six-man rotation, a strategy they've used intermittently in recent years. This approach will also aid Imai's transition from Japan, where pitchers typically start once a week with intensive bullpen sessions. “In April, we have a ton of games early,” Espada noted. “We go to Colorado and the colder temperatures. … There’s a lot of factors we take into consideration, so yes, you’ll see that six-man rotation more often this season. You’ll probably see it from the get-go.”
Espada has consulted with pitching coach Josh Miller on Imai's Spring Training, ensuring ample recovery time. Imai will skip the World Baseball Classic, allowing full participation in Florida camp. “I’m really fascinated to see how he’s going to prepare and, for me, help him make those adjustments from Japan to the United States,” Espada said. “He did show some capability going deep in games and throwing complete games and throwing a ton of pitches, but he did have a lot of days to recover from them. We’re going to make it out and make sure we put him in the best position for success.”
“Obviously, he’s going to need some time in between [starts] to recover and bounce back,” Espada added. “Those are things we are going to make sure, not only him, but the rest of our rotation, are in a position that they can recover, and we can have them healthy throughout the season.”
